trig identities

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Last updated 12:09 PM on 9/14/26
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10 Terms

1
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cotx

1/tanx or cos/sin

2
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cosecx

1/sinx

3
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secx

1/cosx

4
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sin2x

2sinxcosx

5
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cos2x

cos squared x -sin squared x

6
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cos2x

1-2 sin squared x

7
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tan2x

2tanx/1-tan squared x

8
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cosx to sin

sin(90-x)

9
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sinx to cos

cos(90-x)

10
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sec squared x in tan

1+ tan squared x