Question

Turn this into Trig form:
-5+4i

Answer 1

So I suppose you mean this by trig form :

r(cos(t)+i sin(t))

where r is the absolute value of the complex number and t is the angle. So you need to compute r and t.

Answer 2

Do you know how to find them?

Answer 3

Yes that's the trig form

Answer 4

ummm hold on

Answer 5

is r= sqrt 41 ?

Answer 6

cuz it is sqrt a^2+b^2

Answer 7

yes, that's right.

Answer 8

for t i use tan theta = b/a so it's 4/-5

Answer 9

theta = -38.69

Answer 10

t = -38.69

Answer 11

I'm not sure if the negative nessesary ?

Answer 12

That's not entirely correct, you're looking for this angle: