DOUBL ANGLE AND HALF ANGLE IDENTITIES
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Last updated 4:18 AM on 10/17/24
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7 Terms
1
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Sin (2A)
2sinAcosA
2
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Cos (2A)
cos²A-sin²A
3
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Cos (2A) #2
2cos²A-1
4
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Cos (2A) #3
1-2sin²A
5
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Tan (2A)
2tanA/1-tan²A
6
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Sin (B/2)
+-sqrt1-cosB/2
7
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Cos (B/2)
+-sqrt1+cosB/2
Note 
Flashcards (244)