plumiR cos(θ ± α) form: OCR A‑Level Maths questions
OCR A-Level Maths past-paper questions on 1.05.8 R cos(θ ± α) form, 2018–2025, with mark schemes and examiner’s reports where available. Add MadAsMaths questions to your practice, or browse them separately by topic and difficulty.
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All 4 questions on R cos(θ ± α) form, as a list
- June 2025, Paper 1, Q9 (10 marks): (a) Express cos 3 2 x 4 sin 2 x in the form R cos ( 2 x ) , where R 2 0 and ° 0 1 1 90 ° . [3] + - a a (b) In this question you must show detailed reasoning. 3
- June 2023, Paper 3, Q2 (5 marks): (a) Express sin 3 x 4 cos x in the form R sin ( x ) , where R 0 and ° 0 90 ° . Give the - - 2 1 1 a a value of a correct to 4 significant figures. [3] (b) Hence
- November 2021, Paper 3, Q5 (6 marks): - , A particle P moves along a straight line in such a way that at time t seconds P has velocity v m s 1 5 where v 12 cos t 5 sin t . = + 1 (a) Express v in the
- June 2019, Paper 1, Q9 (11 marks): 9 (a) Express cos 3 3 x 7 sin 3 x in the form R cos ( 3 x ) , where R 2 0 and 0 1 1 r. [3] + - a a 2 (b) Give full details of a sequence of three transformation
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