OpenStax, Algebra and Trigonometry 2e §9.5 Solving Trigonometric Equations · Review Exercise 120 · Trigonometry · Identities

Solving Trigonometric Equations · Review Exercise 120

Find the exact value.

$cos (83°) cos (23°) + s in (83°) s in (23°)$

Its source prints no answer for this problem, so there's nothing to check against.

~8 minWritten answer · compare with the solution

OpenStax, Algebra and Trigonometry 2e · §9.5 Solving Trigonometric Equations · Review Exercise 120

Stuck? A gentle nudge

No hints for this one.

Something off?

Workspace

Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.