Question

let z=5(cos35 degrees + isin35 degrees) and w=4(cos15 degrees + isin15 degrees).
a) find zw. write answer in standard form
b)find z/w. write answer in trig form

Answer 1

\[
z= 5 e^{ 35 i}\\
w=4 e^{ 15 i}\\
z w= 20 e^{(35+15) i}=20 e^{50 i}\\
\frac z w=\frac 5 4 e^{(35-15)i}=\frac 5 4 e^{20i}


\]You can finish it now.

Answer 2

Thanks so much!! This helps me understand the rest of my homework now!

Answer 3

YW