Sine, Cosine & Tangent
The Sine Rule. The Ambiguous Case. 2 The Cosine Rule. 3 Miscellaneous Examples. Introduction. The sine and cosine rules are used to solve non-right-angled triangles, i.e. finding the unknown sides and angles. ( 1 The Sine Rule. Consider a triangle with angles A, B and C, and sides a, b and c as shown. C ................
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