ACOSINE()

ACOSINE() returns the numeric arc cosine of an angle that is expressed in radians.

Function Format

ACOSINE(radians)

ACOSINE() returns the numeric arc cosine of the measurement of the desired angle in radians.

Note: If your angle is expressed in degrees, use the RADIAN() function to convert the degrees to radians. To round the result of the RADIAN() function, use the DECIMALS() function.

Examples

ACOSINE(.7854) = 0.667454248931402

ACOSINE(DECIMALS(RADIANS(45),4))= 0.667454248931402