ACOS

Description

ACOS returns the arc cosine of a number.

Syntax

ACOS ( number )

Parameter	Description
number	The cosine of the angle. The cosine can range from 1 to -1.

Remarks

The resulting angle is returned in radians (from 0 to p). To convert the resulting radians to degrees, multiply the radians by 180/PI( ).

Examples

This function returns 1.05:

ACOS(.5)

This function returns 1.77:

ACOS(.2)

Also, see