sum and difference formulas + double angle identities (copy)
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Last updated 1:03 AM on 3/22/26
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9 Terms
1
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sin2x
2sinxcosx
2
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sin(A+B)
sinAcosB+cosAsinB
3
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sin(A-B)
sinAcosB-cosAsinB
4
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cos(A+B)
cosAcosB-sinAsinB
5
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cos(A-B)
cosAcosB+sinAsinB
6
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sin(2x)
2sinxcosx
7
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cos2x
\cos^2x-sin^2x
8
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cos2x
1-2\sin^2x
9
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cos2x
2\cos^2x -1
