Exercises: Represent Complex Numbers on the Complex Plane

Show your work. For polar form, use exact values where possible (e.g., $\cos 60° = \frac{1}{2}$).

Grade 9·20 problems·~35 min·Common Core Math - HS Number and Quantity·standard·hsn-cn-b-4

Work through problems with immediate feedback

Fluency Practice

Convert $4(\cos 150° + i\sin 150°)$ to rectangular form $a + bi$ .

$4 + 4\sqrt{3}\,i$

$-2\sqrt{3} + 2i$

$2\sqrt{3} - 2i$

$-2 + 2i\sqrt{3}$