Question

express the complex number in polar form
there are two different problems

5.2i 6+4i

Answer 1

(5.2) < 90

7.2111 < 33.69

Answer 2

how tho i need to learn this :(

Answer 3

\[i = cos(\frac{\pi}{2})+ i sin(\frac{\pi}{2})\] so first answer is \[5.2(cos(\frac{\pi}{2})+ i sin(\frac{\pi}{2}))\]

Answer 4

great website to learn:

http://www.intmath.com/complex-numbers/4-polar-form.php

Answer 5

in general \[a+bi=r(cos(\theta)+isin(\theta))\]
\[r=\sqrt{(a^2+b^2)}\]
\[tan(\theta)=\frac{b}{a}\]

Answer 6

perhaps i read the problem wrong. is the first one 5.2i or 5+2i?