Trigonometric Table
* sinθ × cosecθ = 1
* cosθ × secθ = 1
* 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° - θ) = cosθ
* cos(90° - θ) = sinθ
* tan(90° - θ) = cotθ
* cot(90° - θ) = tanθ
* sec(90° - θ) = cosecθ
* cosec(90° - θ) = secθ
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