ACOS

Calculates the inverse cosine of the specified number (arccosine), in radians.

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The ACOS function calculates the angle for a given cosine value. The value argument must be in the range (-1, 1); values outside this range will return #ERROR!

Syntax

=ACOS(value)

Arguments

Argument	Type	Description
value	Number	The cosine value, in the range (-1, 1)

Examples

=ACOS(1)→0
Calculates the arccosine of 1

=ACOS(0)→1.57079632679489661923
Calculates the arccosine of 0

=ACOS(@"Property 1")→1.33871864393218344181
Calculates the arccosine of the shape data property @"Property 1" (0.23)