OpenStax, Algebra and Trigonometry 2e §10.5 Polar Form of Complex Numbers · Example 8 · Complex Numbers · Polar form

Finding the Product of Two Complex Numbers in Polar Form

Find the product of $z_{1} z_{2},$ given $z_{1} = 4 (cos (80°) + i s in (80°))$ and $z_{2} = 2 (cos (145°) + i s in (145°)) .$

~5 minWritten answer · check your work with Lemma

OpenStax, Algebra and Trigonometry 2e · §10.5 Polar Form of Complex Numbers · Example 8

Stuck? A gentle nudge

No hints for this one.

Something off?

Workspace

Your working

Check your full solution

Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.

Your first check today doesn't need an account.

Your photos and PDFs are read once and not stored — only the transcription is kept.