Question

Convert 6cis5π/6 to rectangular form.

Answer 1

-3 sqrt(3) + 3 i

Explanation:

6 cis ( 5 * pi / 6)

cis is (cos + i sin)

6 ( cos ( 5 pi /6) +i sin ( 5 * pi /6))

6 (-sqrt(3)/2 + i (1/2))

distribute

-3 sqrt(3) + 3 i