ASIN function

See also

Returns the arcsine of a number, for example, the angle whose sine is number.

Syntax

ASIN(number)

Remarks

The input value must be in the range -1 <= number <= 1, or a #NUM! error is returned. The resulting angle is in the range -PI/2 <= angle <= PI/2 radians (-90 <= angle <= 90 degrees).

Example

ASIN(1)

Equals 90 deg.