trig identities
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19 Terms
1
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sin^2 x + cos^2 x
1
2
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tan^2 x + 1
sec^2 x
3
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1 + cot^2 x
csc^2 x
4
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sin(2x)
2sin x cos x
5
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cos(2x)
cos^2 x - sin^2 x
6
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cos(2x)
2cos^2 x - 1
7
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cos(2x)
1 - 2sin^2 x
8
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sin(a + b)
sin a cos b + cos a sin b
9
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sin^2 x + cos^2 x
1
10
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tan^2 x + 1
sec^2 x
11
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1 + cot^2 x
csc^2 x
12
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sin(2x)
2sin x cos x
13
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cos(2x)
cos^2 x - sin^2 x
14
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cos(2x)
2cos^2 x - 1
15
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cos(2x)
1 - 2sin^2 x
16
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sin(a + b)
sin a cos b + cos a sin b
17
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cos(a + b)
cos a cos b - sin a sin b
18
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cos(a + b)
cos a cos b - sin a sin b
19
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Note 
Flashcards (50)