asin

 
 
 

Returns the radian value of the arc sine of a number. The arc sine is the angle whose sine is the specified number. The returned value is from -pi/2 to pi/2.

float asin(float number)

number is the sine of the angle, and must be from -1 to 1.

Example

asin(0.5)

Returns 0.525 radians.

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