The SEQUENCE part creates a dynamic list of numbers (1, 2, 3...) that corresponds to the row index. For example, in the fifth ...
The Excel IMARGUMENT function is an engineering function, and its purpose is to return the argument theta, an angle expressed in radians. The formula for the IMARGUMENT function is IMARGUMENT (inumber ...
The Alt+Enter shortcut isn't limited to new formulas you write—you can go back and clean up any messy formulas at any time.