Java Math.tan() to get tan vlaue of input angle in radian

Math.tan() returns the trigonometric tan value of an angle in radian.
Syntax

Math.tan(angle_in_radian)

Note that all input numbers are in Radians.

Here are some examples.

System.out.println(Math.tan(Math.PI));	//-1.2246467991473532E-16
System.out.println(Math.tan(Math.PI/2));//1.633123935319537E16
System.out.println(Math.tan(2)); 	//-2.185039863261519
System.out.println(Math.tan(1.22));	//2.7327541993067146
System.out.println(Math.tan(-1.22)); 	//-2.7327541993067146
System.out.println(Math.tan(0));	// 0.0

We can use toRadians to convert degree value to radian.
Math.round() to rounds a floot or double data type to nearest integer value

System.out.println(Math.round((Math.tan(Math.toRadians(180)))));//0
System.out.println((Math.tan(Math.toRadians(180))));//1.2246467991473532E-16
System.out.println(Math.tan(Math.toRadians(90))); //1.633123935319537E16
System.out.println(Math.tan(Math.PI)); 		//-1.2246467991473532E-16
System.out.println(Math.tan(Math.PI/2));	//1.633123935319537E16

All Math functions

cos() sin() roRadians() roDegrees() log10() floor() Java - Tutorials

Math.tan()

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