plumiSmall angle approximations: WJEC A‑Level Maths questions
WJEC A-Level Maths past-paper questions on 5.3 Small angle approximations, 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 3 questions on Small angle approximations, as a list
- Summer 2025, Unit 3, Q3 (6 marks): cos Given that θ is small, find an estimate for the solution of the equation 0 8 3. . 1 sin 2 [6]
- Summer 2024, Unit 3, Q12 (6 marks): 2cos sin 1 1 2 Given that θ is small, show that 12. (a) . [2] Hence, when θ is small, show that (b) 1 2 1 a b , 2cos sin 1 whe
- Summer 2018, Unit 3, Q7 (3 marks): 7 Use small angle approximations to find the small negative root of the equation sinx + cosx = 0.5. [3]
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