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Sine and Cosine Rule | GCSE Maths
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Sine and Cosine Rule | GCSE MathsEdexcel GCSE (9-1) Specification: Unit: G21 know the exact values of sin θ and cos θ for θ = 0°30°45°60° and 90°; know the exact value of tan θ for θ = 0°45° and 60° G22 know and apply the sine rule asin A= bsin B= csin Cand cosine rule a2= b2 + c 2 – 2bc cos Ato find unknown lengths and angles
