May/June 2026 Paper 12

2026 · 10 questions · 19 parts · 75 marks

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6Trigonometric Identities EquationsMedium4 marks

Solve the equation

cos^{- 1} (sin^{2} x + \frac{3}{2} sin x) = \frac{2}{3} π

for

0 \leq x \leq 2 π

.

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