Tangent

Evaluate the tangent of a number.

The tangent is defined as

Usage

var tan = require( '@stdlib/math/base/special/tan' );

tan( x )

Evaluates the tangent of a number (in radians).

var v = tan( 0.0 );
// returns ~0.0

v = tan( -3.141592653589793/4.0 );
// returns ~-1.0

v = tan( 3.141592653589793/4.0 );
// returns ~1.0

v = tan( NaN );
// returns NaN

Examples

var linspace = require( '@stdlib/array/base/linspace' );
var PI = require( '@stdlib/constants/float64/pi' );
var tan = require( '@stdlib/math/base/special/tan' );

var x = linspace( -PI/2.0, PI/2.0, 100 );

var i;
for ( i = 0; i < x.length; i++ ) {
    console.log( tan( x[ i ] ) );
}