7.4 Simplifying a cos x +- b sin x
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Given that 5cos⁡θ−12sin⁡θ≡Rcos⁡(θ+α)5 \cos \theta - 12 \sin \theta \equiv R \cos(\theta + \alpha)5cosθ−12sinθ≡Rcos(θ+α) find the value of RRR, where R>0R > 0R>0.

Circle the correct answer from the options below:

555 \qquad 777 \qquad 131313 \qquad 171717

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7.4 Simplifying a cos x +- b sin x Questions

Practise Edexcel A Level Maths 7.4 Simplifying a cos x +- b sin x with exam-style questions for A Level Maths. 19 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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7.4 Simplifying a cos x +- b sin x Questions

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