Edexcel IGCSE Math a Higher 4.8 Ha Trigonometric Ratios of Obtuse Angles Topic Practice

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Pearson Edexcel International GCSE Mathematics (Specification A) (4MA1)

1 Numbers and the number system

2 Equations, formulae and identities

3 Sequences, functions and graphs

4 Geometry and trigonometry

4.1 Angles, lines and triangles

4.5 Construction

4.6 Circle properties

4.7 Geometrical reasoning

4.8 Trigonometry and Pythagoras’ theorem

4.8.A Pythagoras' theorem in two dimensions

4.8.B Trigonometry in right-angled triangles

4.8.C Two-dimensional trigonometry and bearings

4.8.HA Trigonometric ratios of obtuse angles

4.8.HB Angles of elevation and depression

4.8.HC Sine and cosine rules

4.8.HD Pythagoras’ theorem in three dimensions

4.8.HE Area of a triangle using 1/2 ab sin C

4.8.HF Trigonometrical methods to solve problems in three

4.9 Mensuration of 2D shapes

4.10 3D shapes and volume

4.11 Similarity

5 Vectors and transformation geometry

6 Statistics and probability

7 Mathematical problem-solving and reasoning

IGCSE/Edexcel/Math a//Higher/Question Bank/4 Geometry and trigonometry/4.8 Trigonometry and Pythagoras’ theorem/4.8.HA Trigonometric ratios of obtuse angles

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