Trigonometry Outcomes 0.0 / 5 ? MathematicsTrigonometry OutcomesA2/A-levelEdexcel Created by: ElliottCreated on: 28-04-14 00:37 tanθ = sinθ/cosθ 1 of 23 sin^2 θ + cos^2 θ = 1 2 of 23 cosecθ = 1/sinθ 3 of 23 secθ = 1/cosθ 4 of 23 cotθ = 1/tanθ 5 of 23 1/tanθ = cosθ/sinθ ∴ cotθ = 1/tanθ = cosθ/sinθ 6 of 23 1 + tan^2 θ = sec^2 θ 7 of 23 1 + cot^2 θ cosec^2 θ 8 of 23 Sin(A+B) = SinACosB + CosASinB 9 of 23 Sin(A-B) = SinACosB - CosASinB 10 of 23 Cos(A+B) = CosACosB - SinASinB 11 of 23 Cos(A-B) = CosACosB + SinASinB 12 of 23 Tan(A+B) = (TanA + TanB)/(1 - TanATanB) 13 of 23 Tan(A-B) = (TanA - TanB)/(1 + TanATanB) 14 of 23 Sin2A ≡ 2SinACosA 15 of 23 Cos2A ≡ Cos^2 A - Sin^2 A 16 of 23 Cos2A ≡ 2Cos^2 A - 1 17 of 23 Cos2A ≡ 1 - 2Sin^2 A 18 of 23 Tan2A ≡ (2TanA)/(1 - Tan^2 A) 19 of 23 SinP + SinQ ≡ 2Sin((P+Q)/2)Cos((P-Q)/2) 20 of 23 SinP - SinQ ≡ 2Cos((P+Q)/2)Sin((P-Q)/2) 21 of 23 CosP + CosQ ≡ 2Cos((P+Q)/2)Cos((P-Q)/2) 22 of 23 CosP - CosQ ≡ -2Sin((P+Q)/2)Sin((P-Q)/2) 23 of 23
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