Calculating Trigonometric Functions by Example

From Java Example Source Code

[edit] Overview - Calculating Trigonometric Functions by Example

This Java example program shows how to use calculating trigonometric functions with Math in Java.

[edit] Java Source Code

• Package: example.math
• File: TrigFun.java

package example.math;
 
strictfp class TrigFun {
    public static void main(String[] args) {
	double rads, degs, tanA, coTanA;
 
	// Obtain angle in degrees from user
	degs = 120d;
	// Convert degrees to radian
	rads = Math.toRadians(degs);
 
	// Calculate tangent
	tanA = Math.tan(rads);
	System.out.println("Tangent = " + tanA);
 
	// Calculate cotangent
	coTanA = 1.0 / Math.tan(rads);
	System.out.println("Cotangent = " + coTanA);
 
	// Calculate arc-tangent
	rads = Math.atan(tanA);
	degs = Math.toDegrees(rads);
	System.out.println("Arc tangent: " + degs);
 
	// Calculate arc-cotangent
	rads = Math.atan(1 / coTanA);
	degs = Math.toDegrees(rads);
	System.out.println("Arc cotangent: " + degs);
    }
}

[edit] What Result You Can Get

Run the program, you will get:

Tangent = -1.7320508075688783
Cotangent = -0.5773502691896254
Arc tangent: -60.00000000000002
Arc cotangent: -60.00000000000002

[edit] Required External Libraries and/or Files for this Java Example

Need nothing.

[edit] How to Run this Java Example Program

We recommend running this Java example program with Eclipse.

For assistance in working with Eclipse, please see How to Run Java Program with Eclipse.

It's fairly easy.

[edit] Question & Answer

Any question?

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