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Trigonometric Ratios

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Question 82

Line diagram with A, B and C in that order on a horizontal base, D above the base between B and C, joined to A, B and C, and a 30° angle marked at A.

Given BD=CD=9 cmBD = CD = 9 \text{ cm}BD=CD=9 cm, angle DAC=30∘DAC = 30^\circDAC=30∘ and angle ABD=135∘ABD = 135^\circABD=135∘

a.

Find the length of AD AD\,AD to the nearest cm.

[3]
b.

Find the length of ACACAC

[3]
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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