Trigonometry Identities

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Trigonometry Identities

  1. 1. Trigonometry Identities<br />sin2θ+cos2θ≡1<br />sec2θ-tan2θ≡1<br />1+cot2θ≡cosec2θ<br />tanθ=sinθcosθ<br />cotθ=1tanθ=cosθsinθ<br />secθ=1cosθ<br />cosecθ=1sinθ<br />cos90-θ=sinθ<br />sin90-θ=cosθ<br />tan90-θ=1tanθ<br />

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