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Trigonometric Ratios

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Question 48

An obtuse triangle with a horizontal base, a left sloping side labeled 9 cm, a right sloping side labeled 12 cm, and an unlabeled angle arc at the top vertex.

The area of the triangle is 51.6 cm2^22, correct to 3 significant figures.

Calculate the angle giving your answer correct to 3 significant figures.

[2]
Markscheme

Trigonometric Ratios Questions

  1. A Level
  2. /Maths
  3. /Trigonometric Ratios

217 exam-style questions on Edexcel A Level Maths Trigonometric Ratios, covering 9.1 The Cosine Rule, 9.2 The Sine Rule, 9.3 Areas of Triangles, 9.4 Solving Triangle Problems, 9.5 Graphs of Sine, Cosine and Tangent, and 9.6 Transforming Trigonometric Graphs. Each one has a worked solution and a mark scheme showing where the marks go.

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