ANA

16.5.2: ACOS

ACOS(x)

Returns the arc cosine of numerical x, in radians. This function accepts complex arguments.

For ordinary (real) arguments, the arc cosine is only defined for arguments between -1 and +1 (inclusive). Multiply by #RAD to get degrees.

The arc cosine function is defined for any complex argument.

Reverse: COS

See also: ASIN, ATAN, #RAD, Trigonometry, Complex Functions

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