MATSEC AM Pure Mathematics Complete Prep Course — Lesson 52: Solving trigonometric equations

Sarah Mitchell teaches the three-step method for solving trigonometric equations over a stated interval: isolate the ratio, take the inverse for the principal value, then apply CAST and symmetry. She covers the worked case of two cos theta equals root three, the sine, cosine and tangent symmetry rules, multiple angles, quadratic-type equations, Pythagorean substitution, and why dividing by a trigonometric function destroys marks.

Lesson 52 of 158 in the MATSEC AM Pure Mathematics Complete Prep Course audio course from ExamPrepRise.

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