Question

Write the complex number in rectangular form: 4(cos(11π/6)+isin(11π/6))

Answer 1

\[cos \frac {11\pi}{6}= \frac{\sqrt{3}}{2} \\sin\frac{11\pi}{6}=\frac{1}{2}\]
therefore, yours is \[4(\frac{\sqrt{3}}{2}, \frac{1}{2})=(2\sqrt{3}, 2)\]
Is it clear?

Answer 2

hehe, forgot i at sin

Answer 3

it should be (2 sqrt(3), 2i)

Answer 4

yes! very clear! thank you so much!

Answer 5

so it is 2 sqrt(3)+2i right? for rectangular form?

Answer 6

i think so

Answer 7

thanks!

Answer 8

yw