trig identities
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12 Terms
1
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sin(2u)
2sin(u) * cos(u)
2
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cos(2u)
cos²(2u) - sin²(2u)
2cos²(u) - 1
1 - 2sin²(u)
3
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tan(2u)
2tan(u) / (1 - tan²(u))
4
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sin(u/2)
± sqrt((1 - cos(u) / 2)
5
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cos(u/2)
±sqrt[(1 + cos(u)) / 2]
![<p>±sqrt[(1 + cos(u)) / 2]</p>](https://knowt-user-attachments.s3.amazonaws.com/f347ba95-2b0e-466e-b09a-fba9f5ea6d8d.png)
6
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tan(u/2)
(1 - cos(u)) / sin(u)
sin(u) / (1 + cos(u))
7
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sin(u ± v)
8
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cos(u ± v)
9
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tan(u ± v)
10
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sin²(u)
11
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cos²(u)
12
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tan²(u)
Note 
Flashcards (64)