MATSEC AM Pure Mathematics Complete Prep Course — Lesson 53: General solutions of trigonometric equations

Sarah Mitchell derives the three general solution forms for sine, cosine and tangent equations, explaining why sine alternates with minus one to the power n while cosine takes both signs and tangent needs only n pi. She covers principal values, the memorised special cases, multiple angles, and listing solutions inside a stated interval, with two worked radian problems and the marks lost by mixing the forms.

Lesson 53 of 158 in the MATSEC AM Pure Mathematics Complete Prep Course audio course from ExamPrepRise.

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