Quick help ??????????????

Question

Convert the polar form of the complex number into rectangular form

z=3squrt2cis7pi/4

show work

show how you separately convert r and Thea into a and b

Answer 1

z = 3√2[cos(7π/4)+i·sin(7π/4)]

z = 3√2[√2/2 + i(-√2/2)]

z = 3 - 3i

Recall that cisθ = cosθ + i·sinθ

Hope this helped!