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C++ Math asin() Function

C++ Math asin() Function with tutorial for beginners and professionals with examples on isgreaterequal(), less(), islessequal(), islessgreater(), isunordered(), exp(), frexp(), ldexp(), log(), log10(), modf(), exp2(), expm1(), log1p(), log2(), logb(), scalbn(), scalbln() etc.

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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:

float asin(float x);
double asin(double x);
long double asin(long double x);
double asin(integral x);

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.

#include 
#include
using namespace std;
int main()
{
    float degree=0;
    float x=degree*3.14/180;
    std::cout << "Value of Sine is :" <

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.

#include 
#include
using namespace std;
int main()
{
    float degree=90;
    float x=degree*3.14/180;
    std::cout << "Value of Sine is :" <

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.

#include 
#include
using namespace std;
int main()
{
    float degree= -78;
    float x=degree*3.14/180;
    std::cout << "Value of Sine is : " <

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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