37 lines
588 B
Markdown
37 lines
588 B
Markdown
---
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title: math.cos() function
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description: The math.cos() function returns the cosine of the radian argument `x`.
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aliases:
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- /v2.0/reference/flux/functions/math/cos/
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menu:
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v2_0_ref:
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name: math.cos
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parent: Math
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weight: 301
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---
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The `math.cos()` function returns the cosine of the radian argument `x`.
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_**Output data type:** Float_
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```js
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import "math"
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math.cos(x: 3.14)
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// Returns -0.9999987317275396
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```
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## Parameters
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### x
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The value used in the operation.
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_**Data type:** Float_
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## Special cases
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```js
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math.cos(±Inf) // Returns NaN
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math.cos(NaN) // Returns NaN
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```
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