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Last updated 2:14 PM on 9/3/25
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15 Terms
1
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sin(A + B)
sinAcosB + sinBcosA
2
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sin(A - B)
sinAcosB - sinBcosA
3
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cos(A + B)
cosAcosB - sinAsinB
4
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cos(A - B)
cosAcosB + sinAsinB
5
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sin2A
2sinAcosA
6
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cos2A #1
cos2A - sin2A
7
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cos2A #2
2cos2A - 1
8
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cos2A #3
1 - 2sin2A
9
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sin2A+cos2A
1
10
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1+tan2A
sec2A
11
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cotA+1
csc2A
12
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Law of Sines
sinA/a = sinB/b = sinC/c
13
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Law of Cosines
c2 = a2+b2-2ab(cosC)
14
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sin2A
1/2(1-cos2A)
15
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cos2A
1/2(1+cos2A)
Note 
Flashcards (33)