Method cos

types/index.d.ts:7228–7228

* Calculate the cosine of a value. For matrices, the function is * evaluated element wise.

(
    this: MathJsChain<T>
  )

   */

  cos<T extends number | BigNumber | Complex | MathCollection>(
    this: MathJsChain<T>
  ): MathJsChain<T>