Java.lang.StrictMath.cos() Method


The java.lang.StrictMath.cos() method returns the trigonometric cosine of an angle. It includes −

If the argument is NaN or an infinity, then the result is NaN.


Following is the declaration for java.lang.StrictMath.cos() method

public static double cos(double a)


a − This is angle, in radians.

Return Value

This method returns the cosine of the argument.




The following example shows the usage of java.lang.StrictMath.cos() method.

package com.tutorialspoint;

import java.lang.*;

public class StrictMathDemo {

  public static void main(String[] args) {

      double d1 = (60*(Math.PI))/180 , d2 = 0.0, d3 = (1.0/0.0) ;
      // returns the trigonometric cosine of specified angle in radian 
      double cosValue = StrictMath.cos(d1); 
      System.out.println("Trigonometric cosine of d1 = " + cosValue);

      cosValue = StrictMath.cos(d2); 
      System.out.println("Trigonometric cosine of d2 = " + cosValue);

      cosValue = StrictMath.cos(d3); 
      System.out.println("Trigonometric cosine of d3 = " + cosValue);

Let us compile and run the above program, this will produce the following result −

Trigonometric cosine of d1 = 0.5000000000000001
Trigonometric cosine of d2 = 1.0
Trigonometric cosine of d3 = NaN
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