Check out example codes for "how to calculate inverse trigonometric values in c++". It will help you in understanding the concepts better.

Code Example 1

``````* C++ Program to Obtain Inverse of a Trigonometric Ratio
*/
#include <iostream>
#include <cmath>
#include <iomanip>

int main()
{
double value, result;
int choice;

std::cout << "Enter a choice " << std::endl;
std::cout << "1. Inverse Sine" << std::endl;
std::cout << "2. Inverse Cosine" << std::endl;
std::cout << "3. Inverse Tangent" << std::endl;
std::cin  >> choice;
switch (choice) {
case 1:
std::cout << "Enter a value ";
std::cin  >> value;
std::cout << "asin(val) = " << std::setprecision(3)
<< asin(value) << std::endl;
break;
case 2:
std::cout << "Enter a value ";
std::cin  >> value;
std::cout << "acos(val) = " << std::setprecision(3)
<< acos(value) << std::endl;
break;
case 3:
std::cout << "Enter a value ";
std::cin  >> value;
std::cout << "atan(val) = " << std::setprecision(3)
<< atan(value)  << std::endl;
break;
}
return 0;
}``````

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