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Java - Math tan(double x) Method
Description
The Java Math tan(double a) returns the trigonometric tangent of an angle. Special cases −
If the argument is NaN or an infinity, then the result is NaN.
If the argument is zero, then the result is a zero with the same sign as the argument.
The computed result must be within 1 ulp of the exact result. Results must be semi-monotonic.
Declaration
Following is the declaration for java.lang.Math.tan() method
public static double tan(double a)
Parameters
a − an angle, in radians.
Return Value
This method returns the tangent of the argument.
Exception
NA
Computing Trigonometric Tangent of a Positive Double Value Example
The following example shows the usage of Math tan() method to get a tangent value for a positive double value.
package com.tutorialspoint; public class MathDemo { public static void main(String[] args) { // get a double number double x = 45.0; // convert it to radian x = Math.toRadians(x); // print the trigonometric tangent for this double System.out.println("Math.tan(" + x + ")=" + Math.tan(x)); } }
Output
Let us compile and run the above program, this will produce the following result −
Math.tan(0.7853981633974483)=0.9999999999999999
Computing Trigonometric Tangent of a Negative Double Value Example
The following example shows the usage of Math tan() method to get a tangent of a negative double value.
package com.tutorialspoint; public class MathDemo { public static void main(String[] args) { // get a double number double x = -45.0; // convert it to radian x = Math.toRadians(x); // print the trigonometric tangent for this double System.out.println("Math.tan(" + x + ")=" + Math.tan(x)); } }
Output
Let us compile and run the above program, this will produce the following result −
Math.tan(-0.7853981633974483)=-0.9999999999999999
Computing Trigonometric Tangent of a Zero Double Value Example
The following example shows the usage of Math tan() method to get a value of a zero double values.
package com.tutorialspoint; public class MathDemo { public static void main(String[] args) { // get a double number double x = 0.0; // convert it to radian x = Math.toRadians(x); // print the trigonometric tangent for this double System.out.println("Math.tan(" + x + ")=" + Math.tan(x)); } }
Output
Let us compile and run the above program, this will produce the following result −
Math.tan(0.0)=0.0
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