X = a numeric value between -1 and 1.
ASIN returns the arc sine of angle X. The result is the angle (in radians) whose sine is X and ranges from to . To convert the result from radians to degrees, use the DEGREES function.
ASIN(0) = 0
ASIN(A2) = 1.570796327, where A2 = 1
DEGREES(ASIN(V7)) = -11.536959, where V7 = -0.2
ASIN(30) = Error - ASIN, domain is -1 = x = 1
Excel function: ASIN