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Trigonometry

Trigonometric Ratios

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Trigonometric Table
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* sinθ × cosecθ 1
cosθ × secθ 
* tanθ × cotθ 1

Trigonomteric Identities
* sin2θ × cos2θ 1
* sec2θ × tan2θ 1
* cosec2θ × cot2θ 1
* tanθ = sinθ/cosθ
* cotθ = cosθ/sinθ

Trigonometric Ratios of complementary angles
* sin(90° - Î¸) = cosθ
* cos(90° - Î¸) = sinθ
* tan(90° - Î¸) = cotθ
* cot(90° - Î¸) = tanθ
* sec(90° - Î¸) = cosecθ
* cosec(90° - Î¸) = secθ

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