A.1.4 Trigonometry — Add and Subtract Angles

A.1.4 Trigonometry — Add and Subtract Angles

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Based on CLP Calculus Textbooks by Joel Feldman, Andrew Rechnitzer and Elyse Yeager, licensed underCC BY-NC-SA 4.0.

Adapted for use with Socratic AI tutor by Danil Platonov.

Link to the original chapter: https://personal.math.ubc.ca/~CLP/CLP4/clp_4_vc/app_trig.html.

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