11.3 Using Trigonometric Identities
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a.

Prove the identity sin⁡2x1+cot⁡2x≡2sin⁡3xcos⁡x\frac{\sin 2x}{1 + \cot^2 x} \equiv 2 \sin^3 x \cos x1+cot2xsin2x​≡2sin3xcosx

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b.

Hence find ∫6sin⁡4θ1+cot⁡22θ dθ\int \frac{6 \sin 4\theta}{1 + \cot^2 2\theta} \, d\theta∫1+cot22θ6sin4θ​dθ

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11.3 Using Trigonometric Identities Questions

Practise Edexcel A Level Maths 11.3 Using Trigonometric Identities with exam-style questions for A Level Maths. 32 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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11.3 Using Trigonometric Identities Questions

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