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Trigonometric Ratios

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Question 97

In the triangle ABCABCABC, AB=kcmAB = k\text{cm}AB=kcm, BC=10cmBC = 10\text{cm}BC=10cm and angle BAC=30∘BAC = 30^\circBAC=30∘, where 10<k<2010<k<2010<k<20

Find the two possible sizes of angle ABCABCABC, giving your answers in terms of kkk.

[6]
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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