GCSE Trigonometry 0.0 / 5 ? MathematicsTrigonometryGCSEAll boards Created by: GeorgeHarnettCreated on: 01-05-17 16:39 Sine rule a / sinA = b / sinB = c / sinC or sinA / a = sinB / b = sinC / c 1 of 19 Cosine rule 1 a2 = b2 + c2 - 2bc cos A or b2 = a2 + c2 - 2ac cos B or c2 = a2 + b2 - 2ab cos C 2 of 19 Cosine rule 2 cosA = b2 + c2 - a2 / 2bc 3 of 19 Area of a triangle (trigonometry) Area = 0.5 x ab x sinC 4 of 19 Sin0 0 5 of 19 Cos0 1 6 of 19 Tan0 0 7 of 19 Sin30 0.5 8 of 19 Cos30 √3 / 2 9 of 19 Tan30 √3 / 3 10 of 19 Sin45 1 / √2 11 of 19 Cos45 1 / √2 12 of 19 Tan45 1 13 of 19 Sin60 √3 / 2 14 of 19 Cos60 0.5 15 of 19 Tan60 √3 16 of 19 Sin90 1 17 of 19 Cos90 0 18 of 19 Tan90 infinity 19 of 19
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