The ASIN function is one of the Trigonometry functions and it returns the arcsine, or inverse sine, of a number. The returned angle is given in radians in the range -pi/2 to pi/2.
The number is required, the sine 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.
1. Number from -1 to 0
2. Number from 0 to 1