tan() Math class method
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tan()
Description
Returns the tangent of a number in radians.
- Radians to Degrees - divide number by (
Math.PI/ 180). - Degrees to Radians - multiply number by (
Math.PI* 180).
- Like all class methods
tan()should be used on the class rather than an instance of the class.
Syntax
| Signature | Description |
|---|---|
Math.tan(value) | Returns the tangent of a number in radians. |
Parameters
| Parameter | Description |
|---|---|
value | The value you wish to find the tangent of a number in radians of: |
Examples
The code below displays tan() usage.
// Store results in an array.
var tanValues = new Array(6);
tanValues[0] = Math.tan(-1);
tanValues[1] = Math.tan(0);
tanValues[2] = Math.tan('0.75');
tanValues[3] = Math.tan('a string');
tanValues[4] = Math.tan();
tanValues[5] = Math.tan(null);
alert(tanValues);
Related Tutorials
JavaScript Advanced Tutorials - Lesson 4 - Math