Question

Pre Cal Help!! Polar Conversions

Answer 1

this means nothing more but enter it to your calculator / or know some unit circle identities.

Answer 2

Also the angle has to be between -pi and pi. (by agreement)

Answer 3

i got 8(-1/2+i - sqrt 3/2

Answer 4

A

Answer 5

try again

Answer 6

jk D

Answer 7

(-;

Answer 8

so what about this one?

Answer 9

most important about all these problems is to know where you expect the complex number, I, II, III, or IV Quadrant.

Answer 10

can you answer this question? thinking about a complex coordinate plane?

Answer 11

isnt there a formula?

Answer 12

or we could solve all of the options like the last problem...

Answer 13

only 4cps 300 gives 2 :P....its D again....

Answer 14

*cos

Answer 15

i thoughtA..

Answer 16

nopes,that gives 6i

Answer 17

as imaginary part

Answer 18

well you can use the same formula as we did in the last example, of course, but you have to find an unique argument.

Answer 19

the argument of course depends on whether the complex number is in the first quadrant, or in the third, or wherever.

Answer 20

how do i figure out which quadraant?

Answer 21

the number is

\[\Large z=2-2\sqrt{3}i \]

Now recall that a complex number is always in this form

\[\Large z=x+iy \]