C asin() Function

C asin() Function

The asin() function returns the arc-sine of the given number.

This function is defined in <math.h> header file.

Example

C Compiler
#include <stdio.h> #include <math.h> int main() { printf("%lf", asin(0.5)); return 0; }

Syntax

asin(data_type x)

Parameter Values

ValueTypeExplanation
xRequiredSpecifies a number.

Return Value

ValueExplanation
NumberThe arc-sine of the given number.
The return value will be between -π / 2 to π / 2, if the given value is between -1 and 1.
The return value is represented in radians.
NaNIf the given value is not between -1 and 1 or empty.

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