This method returns the tangent of a number. The tan method returns a numeric value that represents the tangent of the angle.
Its syntax is as follows −
Math.tan( x ) ;
x − A number representing an angle in radians.
Returns the tangent of a number.
Try the following example program.
<html> <head> <title>JavaScript Math tan() Method</title> </head> <body> <script type="text/javascript"> var value = Math.tan( -30 ); document.write("First Test Value : " + value ); var value = Math.tan( 90 ); document.write("<br />Second Test Value : " + value ); var value = Math.tan( 45 ); document.write("<br />Third Test Value : " + value ); var value = Math.tan( Math.PI/180 ); document.write("<br />Fourth Test Value : " + value ); </script> </body> </html>
First Test Value : 6.405331196646276 Second Test Value : -1.995200412208242 Third Test Value : 1.6197751905438615 Fourth Test Value : 0.017455064928217585