Function cos #
Calculate the cosine of a value.
To avoid confusion with the matrix cosine, this function does not apply to matrices.
Syntax #
math.cos(x)
Parameters #
| Parameter | Type | Description |
|---|---|---|
x |
number | BigNumber | Complex | Unit | Function input |
Returns #
| Type | Description |
|---|---|
| number | BigNumber | Complex | Cosine of x |
Throws #
Type | Description —- | ———–
Examples #
math.cos(2) // returns number -0.4161468365471422
math.cos(math.pi / 4) // returns number 0.7071067811865475
math.cos(math.unit(180, 'deg')) // returns number -1
math.cos(math.unit(60, 'deg')) // returns number 0.5
const angle = 0.2
math.pow(math.sin(angle), 2) + math.pow(math.cos(angle), 2) // returns number ~1
