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Solve the equation $\sec^2\theta = 3\csc\theta$ within $0^\circ < \theta < 180^\circ$.
Mathematics 9709 · AS & A Level · Trigonometry
Solve the equation $\sec^2\theta = 3\csc\theta$ within $0^\circ < \theta < 180^\circ$.
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “State that $\dfrac{1}{\cos^2\theta}=\dfrac{3}{\sin\theta}$ or $1+\tan^2\theta=\dfrac{3}{\sin\theta}$” …