10.8 Exercise 183

Given $z_{1} = 8 cis \left(36°\right)$ and $z_{2} = 2 cis \left(15°\right) ,$ evaluate each expression.

Eliminate the parameter $t$ to rewrite the following parametric equations as a Cartesian equation: $\left\{\right. \begin{matrix}x \left(t\right) = t + 1 \\ y \left(t\right) = 2 t^{2}\end{matrix} .$