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ATAN Function in C

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The ATAN Function in C programming is one of the Math Library Function. It used to calculate Trigonometry Arc Tangent value for the specified expression, or value. In this article we will show you, How to use this ATAN function with example.

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

Syntax of ATAN Function in C

The basic syntax of the atan in C Programming is as shown below.

double atan(double number);

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

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