ASIN function

Returns the arcsine, or inverse sine, of a number. The arcsine is the angle whose sine is number. The returned angle is given in radians in the range -pi/2 to pi/2.

Syntax

ASIN(number)

Number     is the sine of the angle you want and must be from -1 to 1.

Remark

To express the arcsine in degrees, multiply the result by 180/PI() or use the DEGREES function.

Examples

Formula	Description (Result)
=ASIN(-0.5)	Arcsine of -0.5 in radians, -pi/6 (-0.5236)
=ASIN(-0.5)*180/PI()	Arcsine of -0.5 in degrees (-30)
=DEGREES(ASIN(-0.5))	Arcsine of -0.5 in degrees (-30)