Question

Please help me guys!!!!!!!!

Answer 1

`-64=64cos(\pi )+64i/ sin(\pi )`

Explanation:

For a complex number a + bi, polar form is given by
`r(cos(0)+ i sin(0))`, where
`r = √(a^2+b^2)` and
`a = atan((b)/(a) )`

In this case, we have
`a = -64` and
`b=0`

Therefore,
`r = √((-64)^2+(0)^2) =64`

Also,
`0 = atan((0)/(-64) )+\pi =\pi`

Which means that,
`-64=64cos(\pi )+64i/ sin(\pi )`!!!

I'm happy i finally got it!

Answer 2

-64

Explanation: