mathjs/docs/reference/functions/tan.md

Function tan

Calculate the tangent of a value. tan(x) is equal to sin(x) / cos(x).

For matrices, the function is evaluated element wise.

Syntax

math.tan(x)

Parameters

Parameter	Type	Description
x	number | BigNumber | Complex | Unit | Array | Matrix	Function input

Returns

Type	Description
number | BigNumber | Complex | Array | Matrix	Tangent of x

Examples

math.tan(0.5)                    // returns number 0.5463024898437905
math.sin(0.5) / math.cos(0.5)    // returns number 0.5463024898437905
math.tan(math.pi / 4)            // returns number 1
math.tan(math.unit(45, 'deg'))   // returns number 1

See also

atan, sin, cos