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3.4 Trigonometry (A-level only)

3.4 Trigonometry (A-level only)

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Question 17
a.

When x x\,x is small, show that tan⁡(3x)cos⁡(2x)\tan(3x) \cos(2x)tan(3x)cos(2x) can be approximated by 3x−6x33x - 6x^33x−6x3

[3]
b.

Hence, approximate the value of tan⁡(0.3)cos⁡(0.2)\tan(0.3) \cos(0.2)tan(0.3)cos(0.2)

[2]
c.

Calculate the percentage error in your approximation

[2]
Markscheme

3.4 Trigonometry (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.4 Trigonometry (A-level only)

221 exam-style questions on CCEA A Level Maths 3.4 Trigonometry (A-level only), covering 3.4.1 Trigonometry (A-level only), 3.4.2 Trigonometry (A-level only), 3.4.3 Trigonometry (A-level only), 3.4.4 Trigonometry (A-level only), 3.4.5 Trigonometry (A-level only), 3.4.6 Trigonometry (A-level only), 3.4.7 Trigonometry (A-level only), and 3.4.8 Trigonometry (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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