trig identities

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Last updated 9:49 AM on 5/21/26
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19 Terms

1
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sin x/cosx

tanx

2
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cos x/ sin x

cot x

3
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1/sin x

csc x

4
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1/ cos x

sec x

5
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1/ tan x

cot x

6
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1

sin2x + cos2x

7
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tan2x + 1

sec2x

8
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cot2x + 1

csc2x

9
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sin (-x)

-sin (x)

10
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cos (-x)

cos (x)

11
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tan (-x)

-tan (x)

12
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1- cos2x

sin2x

13
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1-sin2x

cos2x

14
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sec2x-1

tan2x

15
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csc2x-1

cot2x

16
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csc (-x)

-csc (x)

17
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sec (-x)

sec (x)

18
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cot (-x)

-cot (x)

19
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sin2x

2sinxcosx