## Trigonometry (11th Edition) Clone

16$(cos50^\circ + i sin50^\circ)$
$w = 8(cos40^\circ + i sin40^\circ)$ = $8cis40^\circ$ and $z = 2(cos10^\circ + i sin10^\circ)$ = $2cis10^\circ$ wz = ($8cis40^\circ$)($2cis10^\circ$) = 16$cis(40^\circ + 10^\circ)$ Product Theorem = 16$(cos50^\circ + i sin50^\circ)$