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❮ C Function Bsearch C Exercise Example87 ❯

C Library Function - asin()

C Standard Library - <math.h>

Description

The C library function double asin(double x) returns the arc sine of x in radians.

Declaration

Here is the declaration for the asin() function.

double asin(double x)

Parameters

Return Value

The function returns the arc sine of x in radians, within the range [-pi/2, +pi/2].

Example

The following example demonstrates the use of the asin() function.

#include <stdio.h>
#include <math.h>

#define PI 3.14159265

int main ()
{
   double x, ret, val;
   x = 0.9;
   val = 180.0 / PI;

   ret = asin(x) * val;
   printf("The arc sine of %lf is %lf degrees", x, ret);

   return(0);
}

Let's compile and run the above program, which will produce the following result:

The arc sine of 0.900000 is 64.190609 degrees

C Standard Library - <math.h>

❮ C Function Bsearch C Exercise Example87 ❯