Question

How do we write `z=5i` in polar form?

Answer 1

`z=5(cos(pi/2)+isin(pi/2))`

Explanation:

As `z=5i`, we have `|z|=5`

Therefore we can write it in polar form as `z=5(0+i)`

= `5(cos(pi/2)+isin(pi/2))`