Returns the cosine of value in radians

cos(x)

Returns: double

In a right angled triangle cos(x) = Adjacent / Hypotenuse. If you want to use degrees instead of radians use function dcos().

double x;
double value;
if (cos(x) == 1){
 value = 1;
}

This code will set value to 1, if the angle x is equal to 0 or pi radians.

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