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atan() - Return the Tangent of value as a Argument in C++

  1. Forget Code
  2. C++
  3. atan() - Return the Tangent of value as a Argument 
//ATAN() FUNCTION
#include<iostream.h>
#include<math.h>
#include<conio.h>
int main(void)
{
double val =-0.5;
cout<<"ARc tangent of "<<val<<" is "<<atan(val);
getch();
return 0;
}