E • A-Level Mathematics

Trigonometry

Radian measure, identities, trig graphs, equations and modelling. This page is ready for animated video lessons, worked examples, quizzes, progress tracking and AI tutor support.

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Lessons

E1 Sine, cosine and tangent

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E2 Sine rule and cosine rule

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E3 Area of triangle

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E4 Radian measure

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E5 Small angle approximations

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E6 Trig graphs

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E7 Exact values

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E8 Sec, cosec and cot

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E9 Trig identities

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E10 Double angle formulae

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E11 Trig equations

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E12 Trig modelling

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