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C++ Math asin()
The function computes the inverse sine of a number given in radian.
asin(x) = sin-1x
Syntax
Suppose a number is ‘x’. Syntax would be:
Note: If the value passed is an integer type, then it is cast to double.
Parameter
x: The value whose inverse sine is to be calculated
Return value
| Parameter | Return value |
|---|---|
| -1≤x≤1 | -∏/2,∏/2 |
| x<-1 or x>1 | Not a Number |
Example 1
Let’s see a simple example when the value of x is zero.
Output:
Value of Sine is :0 Inverse of Sine is :0
In this example, asin() function calculates the inverse sine of a number when the value of x is zero.
Example 2
Let’s see a simple example when the value of x is greater than 1.
Output:
Value of Sine is :1 Inverse of Sine is :nan
In this example, asin() function calculates the inverse sine of a number when the value of x is greater than 1.
Example 3
Let’s see a simple example when the value of x is less than -1.
Output:
Value of Sine is : -0.978004 Inverse of Sine is :nan
In this example, asin() function calculates the inverse sine of a number when the value of x is less than -1.
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