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Solve $2\cot 2x + 3\cot x = 5$ for $0^\circ < x < 180^\circ$.
Mathematics 9709 · AS & A Level · Trigonometry
Solve $2\cot 2x + 3\cot x = 5$ for $0^\circ < x < 180^\circ$.
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Use the correct trigonometric formulae to form an equation in $\tan x$” …