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Solve the equation $4 \sin \theta \tan \theta = 1 + 5 \cos \theta$ for $-180^\circ < \theta < 180^\circ$.
Mathematics 9709 · AS & A Level · Trigonometry
Solve the equation $4 \sin \theta \tan \theta = 1 + 5 \cos \theta$ for $-180^\circ < \theta < 180^\circ$.