Question

Write the standard form of the complex number

sqrt 108[cos(−30°) + i sin(−30°)]

Answer 1

`9-3√(3) i.`

Explanation:

`1. \ cos(-30)=( √(3))/(2); \ sin(-30)=-0.5;`

`2. √(108) (cos(-30)+isin(-30))=(√(108) √(3))/(2)-i*√(108)*0.5=9-3√(3) i.`