MediumLaws of sines & cosines

OpenStax, Algebra and Trigonometry 2e §10.2 Non-right Triangles: Law of Cosines · Exercise 15 · Trigonometry · Laws of sines & cosines

Non-right Triangles: Law of Cosines · Exercise 15

Assume $α$ is opposite side $a, β$ is opposite side $b,$ and $γ$ is opposite side $c .$ If possible, solve each triangle for the unknown side. Round to the nearest tenth.

$β = 50°, a = 105, b = 45$

~8 minWritten answer · check your work with Lemma

OpenStax, Algebra and Trigonometry 2e · §10.2 Non-right Triangles: Law of Cosines · Exercise 15

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.