First Principles AI

Accedmychevron_right11thchevron_rightmathchevron_rightComplex Numberschevron_rightExercise 1.5

(i) $(2,75^\circ)$

Here $r=2>0$ and $\theta=75^\circ$ .

The point is $2$ units from the origin at an angle $75^\circ$ from the positive $x$ -axis.

\begin{aligned} x&=r\cos\theta=2\cos 75^\circ\\ y&=r\sin\theta=2\sin 75^\circ \end{aligned}