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### 34 Cards in this Set

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 Sin²Θ 1 – cos²O cos²Θ 1–sin²Θ csc²Θ 1+ cot²Θ sin²Θ+cos² Θ 1 1+tan²Θ sec² Θ Sin(2α) 2sinαcosα Cos(2α) cos²α–sin²α 1–2sin²α 2cos²α–1 Tan(2α) 2tanα/(1-tanα) Sin(α/2) ±√(1-cosα)/2 Cos(α/2) ±√(1+cosα)/2 Tan(α/2) ±√(1-cosα)/(1+cosα) Cos(α–β) cosαcosβ + sinαsinβ Cos(α+β) cosαcosβ – sinαsinβ Sin(α+β) sinαcosβ + cosαsinβ Sin(α–β) sinαcosβ – cosαsinβ Tan(α – β) (tanα – tanβ) / (1+tanαtanβ) Tan(α+β) (tanα + tanβ) / (1 – tanαtanβ) None Sin²Θ 1 – cos²O cos²Θ 1–sin²Θ csc²Θ 1+ cot²Θ sin²Θ+cos² Θ 1 1+tan²Θ sec² Θ Sin(2α) 2sinαcosα Cos(2α) cos²α–sin²α 1–2sin²α 2cos²α–1 Tan(2α) 2tanα/(1-tanα) Sin(α/2) ±√(1-cosα)/2 Cos(α/2) ±√(1+cosα)/2 Tan(α/2) ±√(1-cosα)/(1+cosα) Cos(α–β) cosαcosβ + sinαsinβ Cos(α+β) cosαcosβ – sinαsinβ Sin(α+β) sinαcosβ + cosαsinβ Sin(α–β) sinαcosβ – cosαsinβ Tan(α – β) (tanα – tanβ) / (1+tanαtanβ) Tan(α+β) (tanα + tanβ) / (1 – tanαtanβ) None