OpenStax, Precalculus 2e §7.2 Sum and Difference Identities · Example 4 · Trigonometry · Compound & multiple angles

Finding the Exact Value of an Expression Involving an Inverse Trigonometric Function

Find the exact value of
$s in (co s^{- 1} \frac{1}{2} + s i n^{- 1} \frac{3}{5}) .$

~5 minWritten answer · check your work with Lemma

OpenStax, Precalculus 2e · §7.2 Sum and Difference Identities · Example 4

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.