Method atan

types/index.d.ts:7198–7198

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

(
    this: MathJsChain<T>
  )

   */

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