Question

Express 12∠-90 in rectangular notation.Question 19 options:12j12-j1212 + j12

Answer 1

- Convert 12∠-90 to rectangular form.

`\begin{gathered} x=12\cos (-90)=0 \\ y=12\sin (-90)=-12 \\ \\ \text{The rectangular form of a complex number is} \\ z=x+jy \\ z=0+j(-12) \\ \\ \therefore z=-j12 \end{gathered}`

Answer

The answer is

`z=-j12`