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<< Click to Display Table of Contents >> ACOS (arccosine) |
Syntax:
ACOS(Number)
Description:
The ACOS function (arccosine) is the inverse function of the COS function: It returns the inverse cosine of a number – that is, the angle whose cosine is the Number.
Number must be within the range from -1 to 1 (including -1 and 1).
The result is expressed in radians.
Example:
ACOS(1) returns 0
ACOS(COS(0.1234)) returns 0.1234
Tip:
You can use the DEGREES function to convert the result from radians to degrees.
See also: