ASIN

Syntax: ASIN (x)
Location: QL ROM

This function calculates the arc-sine (in radians) which is the opposite of the sine function, ie:

x = SIN ( ASIN ( x )) = ASIN ( SIN ( x ))

The only valid values of x are in the range -1...1. This means that the range of angles supported by this command are -PI/2...PI/2.

A negative angle means that the hypotenuse appears below the base line of the triangle (you must therefore always bear the orientation of the screen in mind when using this command).

CROSS-REFERENCE:
ACOS, ATAN, ACOT are other arc functions, SIN, COS, TAN and COT their relatives.
Compare ARSINH.
