Use DMT to solve the following equations in polar form.

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- March 1st 2011, 04:18 AMjohnsy123De moivres theorem.
Use DMT to solve the following equations in polar form.

- March 1st 2011, 04:22 AMFernandoRevilla
What have you tried so far?. These problems are just routine knowing the corresponding theory.

- March 1st 2011, 04:30 AMProve It
I'll show you how to do one, then you try to do the other...

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Note that this complex number is in the third quadrant. The angle in the first quadrant is .

So the angle in the third quadrant, .

.

There are always three cube roots, and they are of the same magnitude and evenly spaced about a circle. So they differ by an angle of .

So the other solutions are

and .

But since , we rewrite this as

and .