Pre-Calc Final Review : Pythagorean identities, double and half angle formulas
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Pythagorean identities | cos^2θ+sin^2θ = 1, 1+tan^2θ= sec^2θ, cot^2θ+1= csc^2θ
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Double Angle cos2θ | cos^2θ-sin^2θ, 2cos2θ-1, 1-2sin2θ
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Double Angle sins2θ | 2sinθcosθ
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Double Angle tan2θ | 2tanθ/1-tan2θ
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Half Angle cosθ | cos2(θ/2)-sin2(θ/2), 2cos2(θ/2)-1, 1-sin2(θ/2)
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Half Angle sinθ | 2sin(θ/2)cos(θ/2)
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Half Angle tanθ | 2tan(θ/2) / 1-tan2(θ/2)
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Reciprocal Identities | sinθ=(1/cscθ), cosθ=(1/secθ), tanθ=(1/cotθ), cscθ=(1/sinθ), secθ=(1/cosθ), cotθ=(1/tanθ)
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Quotient Identities | tanθ = (sinθ/cosθ), cotθ= (cosθ/sinθ)
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Created by:
Chippen_22
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