Find the product of the following complex numbers
x=3(cosπ/4 + sinπ/4)
y=7(cos3π/8 + sin 3π/8)
Express your answer in trigonometric form.

Question

Find the product of the following complex numbers
x=3(cosπ/4 + sinπ/4)
y=7(cos3π/8 + sin 3π/8)
Express your answer in trigonometric form.

jdoe0001 · Answer

same as before then $\bf \cfrac{r_1[cos(\alpha)+isin(\alpha)]}{r_2[cos(\beta)+isin(\beta)]}\implies \cfrac{r_1}{r_2}[cos(\alpha - \beta)+isin(\alpha - \beta)]$

jdoe0001 · Answer

h... shoot is the product... well ...

jdoe0001 · Answer

$\bf r_1[cos(\alpha)+isin(\alpha)]\cdot r_2[cos(\beta)+isin(\beta)]
\ \quad \
\implies r_1\cdot r_2[cos(\alpha + \beta)+isin(\alpha + \beta)]$

anonymous · Answer

There we are. Thanks. I just couldn't find that equation anywhere!

jdoe0001 · Answer

yw