C Math asin() Function
Example
Return the arcsine of different numbers:
printf("%f", asin(0.64));
printf("%f", asin(-0.4));
printf("%f", asin(0.0));
printf("%f", asin(1.0));
printf("%f", asin(-1.0));
printf("%f", asin(2.0));
Definition and Usage
The asin() function returns the arcsine of a number in radians.
The asin() function is defined in the <math.h> header file.
Syntax
One of the following:
asin(double number);Parameter Values
| Parameter | Description |
|---|---|
| number |
Required. A number to find the arcsine of, in the range -1 to 1. If the value is outside -1 to 1, it returns NaN (Not a Number). |
Technical Details
| Returns: |
A double value representing the arcsine of a number.
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