sum and difference formulas + double angle identities
3.0(1)
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Last updated 9:18 PM on 11/7/22
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14 Terms
1
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sin2x
2sinxcosx
2
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tan2x
2tanx/1-tan^2x
3
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sin(A+B)
sinAcosB+cosAsinB
4
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sin(A-B)
sinAcosB-cosAsinB
5
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cos(A+B)
cosAcosB-sinAsinB
6
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cos(A-B)
cosAcosB+sinAsinB
7
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tan(A+B)
tanA+tanB/1-tanAtanB
8
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tan(A-B)
tanA-tanB/1+tanAtanB
9
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cos^2x
(1+cos2x)/2
10
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sin^2x
(1-cos2x)/2
11
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tan^2x
(1-cos2x)/(1+cos2x)
12
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cos2x
cos^2x-sin^2x
13
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cos2x
1-2sin^2x
14
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cos2x
2cos^2x-1
