- `Y = tan (Z)`

Compute the tangent for each element of `X` in radians.

This is defined as

> > `%tan(z) = sin(z)/cos(z)%`

See also: `atan`, `tand`, `tanh`.

### References

- https://www.mathworks.com/help/matlab/ref/tan.html
- https://octave.sourceforge.io/octave/function/tan.html
- https://mathworld.wolfram.com/Tangent.html
- https://mathworld.wolfram.com/TrigonometricFunctions.html
- https://en.wikipedia.org/wiki/Trigonometric_functions