mathjs/docs/reference/functions/sin.md

Function sin

Calculate the sine of a value.

For matrices, the function is evaluated element wise.

Syntax

math.sin(x)

Parameters

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

Returns

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

Examples

math.sin(2);                      // returns number 0.9092974268256813
math.sin(math.pi / 4);            // returns number 0.7071067811865475
math.sin(math.unit(90, 'deg'));   // returns number 1
math.sin(math.unit(30, 'deg'));   // returns number 0.5

var angle = 0.2;
math.pow(math.sin(angle), 2) + math.pow(math.cos(angle), 2); // returns number ~1

See also

cos, tan