Calculates the arc cosine of a number.
acos() is the inverse of cos(). It expects arguments in the range -1 to 1. By default, acos() returns values in the range 0 to π (about 3.14). If the angleMode() is DEGREES, then values are returned in the range 0 to 180.
Examples
Syntax
acos(value)Parameters
value
Number:
value whose arc cosine is to be returned.
Returns
Number: arc cosine of the given value.
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