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1.4 Trigonometry

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Question 16

A triangle has sides 7 cm and 9 cm enclosing an acute angle α\alphaα, where cos⁡α=513\displaystyle \cos\alpha=\frac{5}{13}cosα=135​. Find the third side exactly.

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Markscheme

1.4 Trigonometry Questions

  1. A Level
  2. /Maths
  3. /1.4 Trigonometry

84 exam-style questions on CCEA A Level Maths 1.4 Trigonometry, covering 1.4.1 Trigonometry, 1.4.2 Trigonometry, 1.4.3 Trigonometry, 1.4.4 Trigonometry, 1.4.5 Trigonometry, 1.4.6 Trigonometry, and 1.4 Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.

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