[PTRun]Add setting for different trigonometric units in Calculator (#36717)

* Added angle units to PowerToys Run Calculator plugin.

* Update Resources.resx

* Added GitHub SpellCheck rule for 'gradians'.

---------

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

.github/actions/spell-check/expect.txt

@@ -4,12 +4,10 @@ abgr
 ABlocked
 ABOUTBOX
 Abug
-accctrl
 Acceleratorkeys
 ACCEPTFILES
 ACCESSDENIED
 ACCESSTOKEN
-aclapi
 AClient
 AColumn
 acrt
@@ -54,12 +52,9 @@ APIENTRY
 APIIs
 Apm
 APPBARDATA
-appdata
 APPEXECLINK
-Appium
 APPLICATIONFRAMEHOST
 appmanifest
-appmodel
 APPNAME
 appref
 appsettings
@@ -83,11 +78,7 @@ ASSOCSTR
 ASYNCWINDOWPLACEMENT
 ASYNCWINDOWPOS
 atl
-atlbase
-atlcom
 atleast
-atlfile
-atlstr
 ATRIOX
 aumid
 Authenticode
@@ -135,7 +126,6 @@ bmi
 bms
 BNumber
 BODGY
-bootstrapper
 BOOTSTRAPPERINSTALLFOLDER
 bostrot
 BOTTOMALIGN
@@ -163,7 +153,6 @@ CALG
 callbackptr
 calpwstr
 Cangjie
-caniuse
 CANRENAME
 CAPTUREBLT
 CAPTURECHANGED
@@ -178,11 +167,9 @@ CDeclaration
 CDEF
 CElems
 CENTERALIGN
-ceq
 certlm
 certmgr
 cfp
-cguid
 CHANGECBCHAIN
 changecursor
 CHILDACTIVATE
@@ -207,19 +194,16 @@ CLSCTX
 Clusion
 cmder
 CMDNOTFOUNDMODULEINTERFACE
-Cmds
 CMIC
 CMINVOKECOMMANDINFO
 CMINVOKECOMMANDINFOEX
 CMock
 CMONITORS
 cmph
-cne
 CNF
 coclass
 codereview
 Codespaces
-codicon
 COINIT
 colorconv
 colorformat
@@ -231,18 +215,12 @@ comdef
 comdlg
 comexp
 cominterop
-commandline
-commctrl
-commdlg
 compmgmt
 COMPOSITIONFULL
-comutil
 CONFIGW
 CONFLICTINGMODIFIERKEY
 CONFLICTINGMODIFIERSHORTCUT
 CONOUT
-consts
-contentdialog
 contentfiles
 CONTEXTHELP
 CONTEXTMENUHANDLER
@@ -257,7 +235,6 @@ countof
 cph
 cplusplus
 CPower
-cppwinrt
 createdump
 CREATEPROCESS
 CREATESCHEDULEDTASK
@@ -267,8 +244,6 @@ CRECT
 CRH
 critsec
 Crossdevice
-CRSEL
-crx
 CSearch
 CSettings
 cso
@@ -306,11 +281,8 @@ DBLEPSILON
 DCapture
 DCBA
 DCOM
-dcommon
-dcomp
 DComposition
 DCR
-DCs
 ddd
 DDEIf
 DDevice
@@ -345,7 +317,6 @@ DESIGNINFO
 DESKTOPABSOLUTEEDITING
 DESKTOPABSOLUTEPARSING
 desktopshorcutinstalled
-desktopwindowxamlsource
 devblogs
 devdocs
 devenum
@@ -353,7 +324,6 @@ devmgmt
 DEVMODE
 DEVMODEW
 DEVMON
-devpkey
 DEVSOURCE
 DGR
 DIALOGEX
@@ -423,8 +393,6 @@ DWORDLONG
 dworigin
 dwrite
 dxgi
-dxgidebug
-dxgiformat
 easeofaccess
 ecount
 EData
@@ -434,15 +402,12 @@ EDITSHORTCUTS
 EDITTEXT
 EFile
 ekus
-emmintrin
-Emoji
 ENABLEDELAYEDEXPANSION
 ENABLEDPOPUP
 ENABLETAB
 ENABLETEMPLATE
 encodedlaunch
 encryptor
-endpointvolume
 ENDSESSION
 ENSUREVISIBLE
 ENTERSIZEMOVE
@@ -466,7 +431,6 @@ eula
 eurochange
 eventlog
 eventvwr
-evntrace
 evt
 EWXFORCE
 EWXFORCEIFHUNG
@@ -478,7 +442,6 @@ examplehandler
 examplepowertoy
 EXAND
 EXCLUDEFROMCAPTURE
-exdisp
 executionpolicy
 exename
 EXITSIZEMOVE
@@ -541,7 +504,6 @@ frm
 Froml
 FROMTOUCH
 fsmgmt
-Functiondiscoverykeys
 FZE
 gacutil
 Gaeilge
@@ -576,10 +538,10 @@ gpo
 GPOCA
 gpp
 gpu
+gradians
 GSM
 gtm
 guiddata
-guiddef
 GUITHREADINFO
 GValue
 gwl
@@ -626,7 +588,6 @@ Hif
 HIMAGELIST
 himl
 hinst
-hinstance
 HIWORD
 HKCC
 HKCOMB
@@ -659,7 +620,6 @@ hrgn
 hsb
 HSCROLL
 hsi
-hstring
 HTCLIENT
 hthumbnail
 HTOUCHINPUT
@@ -737,14 +697,12 @@ installscopeperuser
 INSTALLSTARTMENUSHORTCUT
 INSTALLSTATE
 Inste
-Intelli
 Interlop
 INTRESOURCE
 INVALIDARG
 invalidoperatioexception
 ipcmanager
 IPREVIEW
-ipreviewhandlervisualssetfont
 irprops
 isbi
 ISearch
@@ -769,7 +727,6 @@ jpe
 jpnime
 Jsons
 jsonval
-junja
 jxr
 keybd
 KEYBDDATA
@@ -787,7 +744,6 @@ keyvault
 KILLFOCUS
 killrunner
 kmph
-Knownfolders
 KSPROPERTY
 Kybd
 lastcodeanalysissucceeded
@@ -818,7 +774,6 @@ LIVEZOOM
 lld
 LLKH
 llkhf
-lmcons
 LMEM
 LMENU
 lnks
@@ -861,7 +816,6 @@ lprc
 LPSAFEARRAY
 lpstr
 lpsz
-lpt
 LPTHREAD
 LPTOP
 lptpm
@@ -920,18 +874,13 @@ MERGECOPY
 MERGEPAINT
 Metadatas
 metafile
-mfapi
 mfc
-mfidl
-mfobjects
 mfplat
-mftransform
 Mgmt
 mic
 midl
 mii
 mindaro
-Minimatch
 Minimizable
 MINIMIZEBOX
 MINIMIZEEND
@@ -946,10 +895,8 @@ mlcfg
 mmc
 mmcexe
 MMdd
-mmdeviceapi
 mmi
 mmsys
-mmsystem
 mockapi
 MODALFRAME
 MODESPRUNED
@@ -976,7 +923,6 @@ mscorlib
 msctls
 msdata
 MSDL
-msedge
 MSGFLT
 msiexec
 MSIFASTINSTALL
@@ -1030,7 +976,6 @@ netframework
 netsetup
 netsh
 newcolor
-newdev
 NEWDIALOGSTYLE
 NEWFILE
 newitem
@@ -1057,7 +1002,6 @@ NOCOPYBITS
 NOCOPYSECURITYATTRIBS
 NOCRLF
 nodeca
-nodoc
 NODRAWCAPTION
 NODRAWICON
 NOINHERITLAYOUT
@@ -1095,7 +1039,6 @@ NOTIFICATIONSDLL
 NOTIFYICONDATA
 NOTIFYICONDATAW
 NOTIMPL
-notlike
 NOTOPMOST
 NOTRACK
 NOTSRCCOPY
@@ -1108,15 +1051,12 @@ NResize
 nsunt
 NTAPI
 ntdll
-ntfs
 NTSTATUS
 NTSYSAPI
 NULLCURSOR
 nullonfailure
 numberbox
 nwc
-Objbase
-objidl
 ocr
 Ocrsettings
 odbccp
@@ -1148,7 +1088,6 @@ osvi
 OUTOFCONTEXT
 outpin
 Outptr
-outputtype
 outsettings
 OVERLAPPEDWINDOW
 overlaywindow
@@ -1167,7 +1106,6 @@ PARENTRELATIVEPARSING
 parray
 PARTIALCONFIRMATIONDIALOGTITLE
 PATCOPY
-pathcch
 PATHMUSTEXIST
 PATINVERT
 PATPAINT
@@ -1255,7 +1193,6 @@ pptal
 ppv
 prc
 Prefixer
-Preinstalled
 prependpath
 prevhost
 previewer
@@ -1272,7 +1209,6 @@ prm
 proactively
 PROCESSENTRY
 PROCESSKEY
-processthreadsapi
 PROCESSTRACE
 procmon
 PRODEXT
@@ -1282,7 +1218,6 @@ programdata
 projectname
 PROPBAG
 PROPERTYKEY
-propkey
 PROPVARIANT
 propvarutil
 PRTL
@@ -1346,7 +1281,6 @@ rectp
 RECTSOURCE
 recyclebin
 Redist
-redistributable
 reencode
 reencoded
 REFCLSID
@@ -1375,10 +1309,8 @@ remoteip
 Removelnk
 renamable
 RENAMEONCOLLISION
-Renamer
 reparented
 reparenting
-reparse
 reportfileaccesses
 requery
 requerying
@@ -1390,7 +1322,6 @@ RESIZETOFIT
 resmimetype
 RESOURCEID
 RESTORETOMAXIMIZED
-restrictederrorinfo
 resultlist
 RETURNONLYFSDIRS
 RGBQUAD
@@ -1405,7 +1336,6 @@ riid
 ringbuffer
 RKey
 RNumber
-roadmap
 rop
 ROUNDSMALL
 rpcrt
@@ -1418,14 +1348,12 @@ rstringalpha
 rstringdigit
 RTB
 RTLREADING
-ruleset
 runas
 rundll
 rungameid
 RUNLEVEL
 runtimeclass
 runtimepack
-runtimes
 ruuid
 rvm
 rwin
@@ -1486,21 +1414,17 @@ SHCNE
 SHCNF
 SHCONTF
 Shcore
-shellapi
 SHELLDETAILS
 SHELLDLL
 shellex
 SHELLEXECUTEINFO
 SHELLEXECUTEINFOW
-shellscalingapi
 SHFILEINFO
 SHFILEOPSTRUCT
 SHGDN
 SHGDNF
 SHGFI
 shinfo
-shldisp
-shlobj
 shlwapi
 shmem
 SHNAMEMAPPING
@@ -1628,7 +1552,6 @@ SVGIn
 SVGIO
 svgz
 SVSI
-SWC
 SWFO
 SWP
 SWRESTORE
@@ -1652,8 +1575,6 @@ SYSMENU
 SYSTEMAPPS
 SYSTEMMODAL
 SYSTEMTIME
-tailwindcss
-tapp
 TApplication
 TApplied
 targ
@@ -1694,7 +1615,6 @@ THH
 THICKFRAME
 THISCOMPONENT
 THotkey
-thumbcache
 TILEDWINDOW
 TILLSON
 timedate
@@ -1708,17 +1628,14 @@ tkconverters
 TLayout
 tlb
 tlbimp
-tlhelp
 TMPVAR
 TNP
 Toolhelp
 toolkitconverters
-Toolset
 toolwindow
 TOPDOWNDIB
 TOUCHEVENTF
 TOUCHINPUT
-touchpad
 TRACEHANDLE
 tracelogging
 tracerpt
@@ -1731,7 +1648,6 @@ triaging
 trl
 trx
 tsa
-Tsd
 TServer
 tstoi
 TStr
@@ -1761,15 +1677,11 @@ UNCPRIORITY
 UNDNAME
 unhiding
 UNICODETEXT
-uninstantiated
-uniquifier
 Uniquifies
 unitconverter
 unittests
-Unknwn
 UNLEN
 UNORM
-unregistering
 unremapped
 unvirtualized
 unwide
@@ -1783,11 +1695,9 @@ updown
 UPGRADINGPRODUCTCODE
 Uptool
 urld
-urlmon
 Usb
 USEDEFAULT
 USEFILEATTRIBUTES
-USERDATA
 USESHOWWINDOW
 USESTDHANDLES
 USRDLL
@@ -1814,7 +1724,6 @@ vdupq
 VERBSONLY
 VERBW
 VERIFYCONTEXT
-verrsrc
 VERSIONINFO
 VERTRES
 VERTSIZE
@@ -1862,7 +1771,6 @@ WANTPALM
 wbem
 WBounds
 Wca
-wcautil
 WCE
 wcex
 WClass
@@ -1884,10 +1792,7 @@ wifi
 wil
 winapi
 winappsdk
-wincodec
-Wincodecsdk
 wincolor
-windef
 windir
 WINDOWCREATED
 WINDOWEDGE
@@ -1896,18 +1801,12 @@ WINDOWNAME
 WINDOWPLACEMENT
 WINDOWPOSCHANGED
 WINDOWPOSCHANGING
-windowsapp
 WINDOWSBUILDNUMBER
 windowssearch
 windowssettings
 WINDOWSTYLES
 WINDOWSTYLESICON
-windowsx
-winerror
 WINEVENT
-winevt
-winexe
-winforms
 winget
 wingetcreate
 Winhook
@@ -1918,9 +1817,7 @@ WINNT
 winres
 winrt
 winsdk
-winsdkver
 winsta
-winternl
 WINTHRESHOLD
 WINVER
 winxamlmanager
@@ -1966,14 +1863,12 @@ wrl
 wscui
 wsf
 wsh
-wsl
 wstr
 wsz
 WTA
 WTNCA
 wtoi
 WTS
-wtsapi
 WTSAT
 Wubi
 WVC

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.Calculator.UnitTest/ExtendedCalculatorParserTests.cs

@@ -279,5 +279,67 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator.UnitTests
             Assert.IsNotNull(result);
             Assert.AreEqual(expectedResult, result.Result);
         }
+
+        [DataTestMethod]
+        [DataRow("sin(90)", "sin((pi / 180) * (90))")]
+        [DataRow("arcsin(0.5)", "(180 / pi) * (arcsin(0.5))")]
+        [DataRow("sin(sin(30))", "sin((pi / 180) * (sin((pi / 180) * (30))))")]
+        [DataRow("cos(tan(45))", "cos((pi / 180) * (tan((pi / 180) * (45))))")]
+        [DataRow("arctan(sin(30))", "(180 / pi) * (arctan(sin((pi / 180) * (30))))")]
+        [DataRow("sin(cos(tan(30)))", "sin((pi / 180) * (cos((pi / 180) * (tan((pi / 180) * (30))))))")]
+        [DataRow("sin(arcsin(0.5))", "sin((pi / 180) * ((180 / pi) * (arcsin(0.5))))")]
+        [DataRow("sin(30) + cos(60)", "sin((pi / 180) * (30)) + cos((pi / 180) * (60))")]
+        [DataRow("sin(30 + 15)", "sin((pi / 180) * (30 + 15))")]
+        [DataRow("sin(45) * cos(45) - tan(30)", "sin((pi / 180) * (45)) * cos((pi / 180) * (45)) - tan((pi / 180) * (30))")]
+        [DataRow("arcsin(arccos(0.5))", "(180 / pi) * (arcsin((180 / pi) * (arccos(0.5))))")]
+        [DataRow("sin(sin(sin(30)))", "sin((pi / 180) * (sin((pi / 180) * (sin((pi / 180) * (30))))))")]
+        [DataRow("log(10)", "log(10)")]
+        [DataRow("sin(30) + pi", "sin((pi / 180) * (30)) + pi")]
+        [DataRow("sin(-30)", "sin((pi / 180) * (-30))")]
+        [DataRow("sin((30))", "sin((pi / 180) * ((30)))")]
+        [DataRow("arcsin(1) * 2", "(180 / pi) * (arcsin(1)) * 2")]
+        [DataRow("cos(1/2)", "cos((pi / 180) * (1/2))")]
+        [DataRow("sin ( 90 )", "sin ((pi / 180) * ( 90 ))")]
+        [DataRow("cos(arcsin(sin(45)))", "cos((pi / 180) * ((180 / pi) * (arcsin(sin((pi / 180) * (45))))))")]
+        public void UpdateTrigFunctions_Degrees(string input, string expectedResult)
+        {
+            // Call UpdateTrigFunctions in degrees mode
+            string result = CalculateHelper.UpdateTrigFunctions(input, CalculateEngine.TrigMode.Degrees);
+
+            // Assert
+            Assert.IsNotNull(result);
+            Assert.AreEqual(expectedResult, result);
+        }
+
+        [DataTestMethod]
+        [DataRow("sin(90)", "sin((pi / 200) * (90))")]
+        [DataRow("arcsin(0.5)", "(200 / pi) * (arcsin(0.5))")]
+        [DataRow("sin(sin(30))", "sin((pi / 200) * (sin((pi / 200) * (30))))")]
+        [DataRow("cos(tan(45))", "cos((pi / 200) * (tan((pi / 200) * (45))))")]
+        [DataRow("arctan(sin(30))", "(200 / pi) * (arctan(sin((pi / 200) * (30))))")]
+        [DataRow("sin(cos(tan(30)))", "sin((pi / 200) * (cos((pi / 200) * (tan((pi / 200) * (30))))))")]
+        [DataRow("sin(arcsin(0.5))", "sin((pi / 200) * ((200 / pi) * (arcsin(0.5))))")]
+        [DataRow("sin(30) + cos(60)", "sin((pi / 200) * (30)) + cos((pi / 200) * (60))")]
+        [DataRow("sin(30 + 15)", "sin((pi / 200) * (30 + 15))")]
+        [DataRow("sin(45) * cos(45) - tan(30)", "sin((pi / 200) * (45)) * cos((pi / 200) * (45)) - tan((pi / 200) * (30))")]
+        [DataRow("arcsin(arccos(0.5))", "(200 / pi) * (arcsin((200 / pi) * (arccos(0.5))))")]
+        [DataRow("sin(sin(sin(30)))", "sin((pi / 200) * (sin((pi / 200) * (sin((pi / 200) * (30))))))")]
+        [DataRow("log(10)", "log(10)")]
+        [DataRow("sin(30) + pi", "sin((pi / 200) * (30)) + pi")]
+        [DataRow("sin(-30)", "sin((pi / 200) * (-30))")]
+        [DataRow("sin((30))", "sin((pi / 200) * ((30)))")]
+        [DataRow("arcsin(1) * 2", "(200 / pi) * (arcsin(1)) * 2")]
+        [DataRow("cos(1/2)", "cos((pi / 200) * (1/2))")]
+        [DataRow("sin ( 90 )", "sin ((pi / 200) * ( 90 ))")]
+        [DataRow("cos(arcsin(sin(45)))", "cos((pi / 200) * ((200 / pi) * (arcsin(sin((pi / 200) * (45))))))")]
+        public void UpdateTrigFunctions_Gradians(string input, string expectedResult)
+        {
+            // Call UpdateTrigFunctions in gradians mode
+            string result = CalculateHelper.UpdateTrigFunctions(input, CalculateEngine.TrigMode.Gradians);
+
+            // Assert
+            Assert.IsNotNull(result);
+            Assert.AreEqual(expectedResult, result);
+        }
     }
 }

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.Calculator/CalculateEngine.cs

@@ -23,6 +23,13 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
 
         public const int RoundingDigits = 10;
 
+        public enum TrigMode
+        {
+            Radians,
+            Degrees,
+            Gradians,
+        }
+
         /// <summary>
         /// Interpret
         /// </summary>
@@ -52,6 +59,9 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
 
             input = CalculateHelper.FixHumanMultiplicationExpressions(input);
 
+            // Modify trig functions depending on angle unit setting
+            input = CalculateHelper.UpdateTrigFunctions(input, Main.GetTrigMode());
+
             var result = _magesEngine.Interpret(input);
 
             // This could happen for some incorrect queries, like pi(2)

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.Calculator/CalculateHelper.cs

@@ -25,6 +25,11 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
             @")+$",
             RegexOptions.Compiled);
 
+        private const string DegToRad = "(pi / 180) * ";
+        private const string GradToRad = "(pi / 200) * ";
+        private const string RadToDeg = "(180 / pi) * ";
+        private const string RadToGrad = "(200 / pi) * ";
+
         public static bool InputValid(string input)
         {
             if (string.IsNullOrWhiteSpace(input))
@@ -204,5 +209,86 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
 
             return output;
         }
+
+        // Gets the index of the closing bracket of a function
+        private static int FindClosingBracketIndex(string input, int start)
+        {
+            int bracketCount = 0;    // Set count to zero
+            for (int i = start; i < input.Length; i++)
+            {
+                if (input[i] == '(')
+                {
+                    bracketCount++;
+                }
+                else if (input[i] == ')')
+                {
+                    bracketCount--;
+                    if (bracketCount == 0)
+                    {
+                        return i;
+                    }
+                }
+            }
+
+            return -1;  // Unmatched brackets
+        }
+
+        private static string ModifyTrigFunction(string input, string function, string modification)
+        {
+            // Get the RegEx pattern to match, depending on whether the function is inverse or normal
+            string pattern = function.StartsWith("arc", StringComparison.Ordinal) ? string.Empty : @"(?<!c)";
+            pattern += $@"{function}\s*\(";
+
+            int index = 0;    // Index for match to ensure that the same match is not found twice
+
+            Regex regex = new Regex(pattern);
+            Match match;
+
+            while ((match = regex.Match(input, index)).Success)
+            {
+                index = match.Index + match.Groups[0].Length + modification.Length;    // Get the next index to look from for further matches
+
+                int endIndex = FindClosingBracketIndex(input, match.Index + match.Groups[0].Length - 1);    // Find the index of the closing bracket of the function
+
+                // If no valid bracket index was found, try the next match
+                if (endIndex == -1)
+                {
+                    continue;
+                }
+
+                string argument = input.Substring(match.Index + match.Groups[0].Length, endIndex - (match.Index + match.Groups[0].Length));  // Extract the argument between the brackets
+                string replaced = function.StartsWith("arc", StringComparison.Ordinal) ? $"{modification}({match.Groups[0].Value}{argument}))" : $"{match.Groups[0].Value}{modification}({argument}))";  // The string to substitute in, handles differing formats of inverse functions
+
+                input = input.Remove(match.Index, endIndex - match.Index + 1);    // Remove the match from the input
+                input = input.Insert(match.Index, replaced);    // Substitute with the new string
+            }
+
+            return input;
+        }
+
+        public static string UpdateTrigFunctions(string input, CalculateEngine.TrigMode mode)
+        {
+            string modifiedInput = input;
+            if (mode == CalculateEngine.TrigMode.Degrees)
+            {
+                modifiedInput = ModifyTrigFunction(modifiedInput, "sin", DegToRad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "cos", DegToRad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "tan", DegToRad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "arcsin", RadToDeg);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "arccos", RadToDeg);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "arctan", RadToDeg);
+            }
+            else if (mode == CalculateEngine.TrigMode.Gradians)
+            {
+                modifiedInput = ModifyTrigFunction(modifiedInput, "sin", GradToRad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "cos", GradToRad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "tan", GradToRad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "arcsin", RadToGrad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "arccos", RadToGrad);
+                modifiedInput = ModifyTrigFunction(modifiedInput, "arctan", RadToGrad);
+            }
+
+            return modifiedInput;
+        }
     }
 }

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.Calculator/Main.cs

@@ -21,6 +21,7 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
         private const string InputUseEnglishFormat = nameof(InputUseEnglishFormat);
         private const string OutputUseEnglishFormat = nameof(OutputUseEnglishFormat);
         private const string ReplaceInput = nameof(ReplaceInput);
+        private const string TrigMode = nameof(TrigMode);
 
         private static readonly CalculateEngine CalculateEngine = new CalculateEngine();
 
@@ -31,6 +32,7 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
         private bool _inputUseEnglishFormat;
         private bool _outputUseEnglishFormat;
         private bool _replaceInput;
+        private static CalculateEngine.TrigMode _trigMode;
 
         public string Name => Resources.wox_plugin_calculator_plugin_name;
 
@@ -67,6 +69,20 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
                 DisplayDescription = Resources.wox_plugin_calculator_replace_input_description,
                 Value = true,
             },
+            new PluginAdditionalOption
+            {
+                Key = TrigMode,
+                DisplayLabel = Resources.wox_plugin_calculator_trig_unit_mode,
+                DisplayDescription = Resources.wox_plugin_calculator_trig_unit_mode_description,
+                PluginOptionType = PluginAdditionalOption.AdditionalOptionType.Combobox,
+                ComboBoxValue = (int)CalculateEngine.TrigMode.Radians,
+                ComboBoxItems =
+                [
+                    new KeyValuePair<string, string>(Resources.wox_plugin_calculator_trig_unit_radians, "0"),
+                    new KeyValuePair<string, string>(Resources.wox_plugin_calculator_trig_unit_degrees, "1"),
+                    new KeyValuePair<string, string>(Resources.wox_plugin_calculator_trig_unit_gradians, "2"),
+                ],
+            },
         };
 
         public List<Result> Query(Query query)
@@ -183,6 +199,7 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
             var inputUseEnglishFormat = false;
             var outputUseEnglishFormat = false;
             var replaceInput = true;
+            var trigMode = CalculateEngine.TrigMode.Radians;
 
             if (settings != null && settings.AdditionalOptions != null)
             {
@@ -194,11 +211,20 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator
 
                 var optionReplaceInput = settings.AdditionalOptions.FirstOrDefault(x => x.Key == ReplaceInput);
                 replaceInput = optionReplaceInput?.Value ?? replaceInput;
+
+                var optionTrigMode = settings.AdditionalOptions.FirstOrDefault(x => x.Key == TrigMode);
+                trigMode = (CalculateEngine.TrigMode)int.Parse(optionTrigMode.ComboBoxValue.ToString(CultureInfo.InvariantCulture), CultureInfo.InvariantCulture);
             }
 
             _inputUseEnglishFormat = inputUseEnglishFormat;
             _outputUseEnglishFormat = outputUseEnglishFormat;
             _replaceInput = replaceInput;
+            _trigMode = trigMode;
+        }
+
+        public static CalculateEngine.TrigMode GetTrigMode()
+        {
+            return _trigMode;
         }
 
         public void Dispose()

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.Calculator/Properties/Resources.Designer.cs

@@ -203,5 +203,50 @@ namespace Microsoft.PowerToys.Run.Plugin.Calculator.Properties {
                 return ResourceManager.GetString("wox_plugin_calculator_replace_input_description", resourceCulture);
             }
         }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Degrees.
+        /// </summary>
+        public static string wox_plugin_calculator_trig_unit_degrees {
+            get {
+                return ResourceManager.GetString("wox_plugin_calculator_trig_unit_degrees", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Gradians.
+        /// </summary>
+        public static string wox_plugin_calculator_trig_unit_gradians {
+            get {
+                return ResourceManager.GetString("wox_plugin_calculator_trig_unit_gradians", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Trigonometry Unit.
+        /// </summary>
+        public static string wox_plugin_calculator_trig_unit_mode {
+            get {
+                return ResourceManager.GetString("wox_plugin_calculator_trig_unit_mode", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Specifies the angle unit to use for trigonometry operations..
+        /// </summary>
+        public static string wox_plugin_calculator_trig_unit_mode_description {
+            get {
+                return ResourceManager.GetString("wox_plugin_calculator_trig_unit_mode_description", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Radians.
+        /// </summary>
+        public static string wox_plugin_calculator_trig_unit_radians {
+            get {
+                return ResourceManager.GetString("wox_plugin_calculator_trig_unit_radians", resourceCulture);
+            }
+        }
     }
 }

src/modules/launcher/Plugins/Microsoft.PowerToys.Run.Plugin.Calculator/Properties/Resources.resx

@@ -167,4 +167,24 @@
   <data name="wox_plugin_calculator_replace_input_description" xml:space="preserve">
     <value>When using direct activation, appending '=' to the expression will replace the input with the calculated result (e.g. '=5*3-2=' will change the query to '=13').</value>
   </data>
+  <data name="wox_plugin_calculator_trig_unit_mode" xml:space="preserve">
+    <value>Trigonometry Unit</value>
+    <comment>Title text for trig unit mode.</comment>
+  </data>
+  <data name="wox_plugin_calculator_trig_unit_mode_description" xml:space="preserve">
+    <value>Specifies the angle unit to use for trigonometry operations</value>
+    <comment>Description text for trig mode setting.</comment>
+  </data>
+  <data name="wox_plugin_calculator_trig_unit_radians" xml:space="preserve">
+    <value>Radians</value>
+    <comment>Text for angle unit.</comment>
+  </data>
+  <data name="wox_plugin_calculator_trig_unit_degrees" xml:space="preserve">
+    <value>Degrees</value>
+    <comment>Text to use for angle unit.</comment>
+  </data>
+  <data name="wox_plugin_calculator_trig_unit_gradians" xml:space="preserve">
+    <value>Gradians</value>
+    <comment>Text for angle unit.</comment>
+  </data>
 </root>