Lots of trig

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Last updated 9:56 AM on 5/18/26
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17 Terms

1
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cos²x =

1 - sin²x

2
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sin²x =

1 - cos²x

3
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sin2x =

2 sinx cosx

4
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cos2x (all three) =

cos²x - sin²x, 2cos²x - 1, 1-2sin²x

5
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tan2x =

2tan x / 1 - tan²x

6
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cot x =

cosx / sinx

7
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sec²x =

1 + tan²x

8
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cosec²x =

1 + cot²x

9
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Differential of sinx =

cosx

10
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Differential of cosx =

-sinx

11
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Differential of tanx =

sec²x

12
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Differential of cotx =

-cosec²x

13
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Differential of secx =

secx tanx

14
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Differential of cosecx =

-cosecx cotx

15
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Integral of coskx =

sinkx / k + c

16
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Integral of sinkx =

-coskx / k + c

17
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Integral of tan²x =

sec²x - 1