simple-squiggle

A restricted subset of Squiggle
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cos.md (1050B)

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      2 
      3 # Function cos
      4 
      5 Calculate the cosine of a value.
      6 
      7 For matrices, the function is evaluated element wise.
      8 
      9 
     10 ## Syntax
     11 
     12 ```js
     13 math.cos(x)
     14 ```
     15 
     16 ### Parameters
     17 
     18 Parameter | Type | Description
     19 --------- | ---- | -----------
     20 `x` | number &#124; BigNumber &#124; Complex &#124; Unit &#124; Array &#124; Matrix | Function input
     21 
     22 ### Returns
     23 
     24 Type | Description
     25 ---- | -----------
     26 number &#124; BigNumber &#124; Complex &#124; Array &#124; Matrix | Cosine of x
     27 
     28 
     29 ### Throws
     30 
     31 Type | Description
     32 ---- | -----------
     33 
     34 
     35 ## Examples
     36 
     37 ```js
     38 math.cos(2)                      // returns number -0.4161468365471422
     39 math.cos(math.pi / 4)            // returns number  0.7071067811865475
     40 math.cos(math.unit(180, 'deg'))  // returns number -1
     41 math.cos(math.unit(60, 'deg'))   // returns number  0.5
     42 
     43 const angle = 0.2
     44 math.pow(math.sin(angle), 2) + math.pow(math.cos(angle), 2) // returns number ~1
     45 ```
     46 
     47 
     48 ## See also
     49 
     50 [cos](cos.md),
     51 [tan](tan.md)