How to Use ACOS Function

The ACOS function returns the arccosine, or inverse cosine, of a number. The returned angle is given in radians in the range 0 (zero) to pi.




Number is required, the cosine of the angle you want and must be from -1 to 1.


– The result is the angle in radians, use 180/PI() or use the DEGREES function to convert into degrees.

Download: ACOS Function

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