Calculus Trig Identities

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Last updated 12:47 AM on 10/5/26
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7 Terms

1
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sin2θ + cos2θ =

1

2
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1 + tan2θ =

sec2θ

3
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sin(2θ) =

2sinθcosθ

4
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cos(2θ) =

cos2θ - sin2θ

5
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sin(-θ) =

-sinθ

6
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cos(-θ) =

cosθ

7
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1 + cot2θ =

csc2θ