## anonymous one year ago Express the complex number in trigonometric form. 2i

1. anonymous

@imqwerty

2. anonymous

@WhateverYouSay

3. imqwerty

4. triciaal

i = SQRT of -1

5. triciaal

6. anonymous

$2 \iota=0+\iota2=r \cos \theta+\iota r \sin \theta$ $r \cos \theta=0$ $r \sin \theta=2$ square and add $r=2$ $2 \sin \theta=2,\sin \theta=1=\sin \frac{ \pi }{ 2 }=\sin \left( 2 n \pi+\frac{ \pi }{ 2 } \right)$ $\theta=2 n \pi+\frac{ \pi }{ 2 }$ $2 \iota=2\left\{ \cos \left( 2 n \pi+\frac{ \pi }{ 2 } \right)+\iota \sin \left( 2 n \pi+\frac{ \pi }{ 2 } \right) \right\}$ n is an integer.

7. anonymous

thank you all the link really helped!