cos()
The cos()
returns the cosine of an argument given in radians.
Syntax
std::cos(n)
Example 1
Use cos()
to return the cosine of 3.1416
radians:
#include <iostream>#include <cmath>int main() {double x = 3.1416;double result;result = std::cos(x);std::cout << "The cosine of " << x << " radians is " << result << "\n";// Output: The cosine of 3.1416 radians is -1}