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11 Terms
1
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tan 2x + 1 = sec2 x
2
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cot2x + 1 = cos2 x
3
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cosx = cos-x
4
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sin-x = -sinx
5
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cosx = sin(90-x)
6
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sinx = cos(90-x)
7
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sin2x = 2sinxcosx
8
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cos2x = cos2 x - sin2 x
9
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cos2x = 2cos2 x - 1
10
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cos2x = 1- 2sin2x
11
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tan2x = (2tanx)/(1-tan2 x)
Note 
Flashcards (36)