Question

write the complex number in the form a+bi
8(cos30+isin30) I dont get how to apply this to the unit circle

Answer 1

8.cos(30)=a and 8sin30=b

Answer 2

okay but the answers arent in degrees

Answer 3

\[z=8.e^{j.30}\]

Answer 4

cos(30)=sqrt(3)/2 and sin(30)=1/2

Answer 5

z=4sqrt(3)+4i

Answer 6

okay hold on can you explain what you just did

Answer 7

look to the first thing i told you,i just plug in the values of sin(30) and cos(30)

Answer 8

okay

Answer 9

.5 and .87

Answer 10

yes,but you dont need a calc to know this values

Answer 11

30 is a notable angle

Answer 12

okay thats where it gets me how do i tell

Answer 13

oh when i look i see sqrt3/2,1/2

Answer 14

you need to know the sin,cos and tg of (30,45,60)

Answer 15

how do i determine that?

Answer 16

oh thank you thats much appreciated!

Answer 17

thats a 45 right or 215?

Answer 18

45

Answer 19

okay so now hold on let me see if i got this