To do Alt + M G on Mac in Excel, download and install Accelerator Keys, then press Option, followed by M, G.
Command: Math & Trig Functions Menu
This is how to do Alt + M G on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + M G opens the Math & Trig functions dropdown menu in Excel’s Formulas tab. This menu contains mathematical and trigonometric functions including ROUND, SUMIF, SUMIFS, ABS, SQRT, SIN, COS, RAND, and many others for numerical calculations.