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IB Mathematics: Applications and Interpretation HL · 12.10: Geometry & Trigonometry · 12.10.13

The sine rule: the ambiguous case Problem set A Answers

Skills

  1. B = 50.4°

  2. B = 33.4°

  3. B = 50.6° or 129°

    1. (a) B = 67.3° or 113°
    2. (b) C = 66.7° or 21.3°
    1. (a) 0 triangles
    2. (b) 2 triangles
    3. (c) 1 triangle
    4. (d) 1 triangle

In context

    1. (a) L = 54.9° or 125°
    2. (b) 17.1 km or 4.40 km

  2. 40.2°

Stretch

  1. 8.82 < x < 15

    1. (a) B = 61.7° or 118°
    2. (b) 48.6 cm² and 26.9 cm²

jmaths.xyz · AI HL · 12.10.13 The sine rule: the ambiguous case