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ATAN Function in C

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The C ATAN Function is a C Math Library Function. It used to calculate Trigonometry Arc Tangent value for the specified expression or value. The syntax of the atan in C Programming is

double atan(double number);

TIP: Please refer to the C TAN Function article to calculate the Tangent value of a specified expression.

ATAN Function in C Example

The atan Function in math library helps you to find the trigonometric Arc Tangent for the specified values. This program, ask the user to enter their own value, and then find the arc tangent value of the user entered one

/* Example for ATAN Function in C Programming */

#include <stdio.h>
#include <math.h>

int main()
{
  double atanValue, number;
  printf(" Please Enter any Floating Value to calculate Arc Tangent :  ");
  scanf("%lf", &number);
  
  atanValue = atan(number);
  
  printf("\n The Arc Tangent value of %lf = %f ", number, atanValue);
  
  return 0;
}

OUTPUT

ATAN Function in C Programming 1