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1.4 Trigonometry

1.4 Trigonometry

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Question 17

A triangle has side lengths 5 cm, 7 cm and 9 cm. Let C C\,C be the angle opposite the side of length 5 cm.

a.

Find cos⁡C \cos C\,cosC as a fraction.

[2]
b.

Find the exact area.

[3]
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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