Maths P2c7

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11 Terms

1
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sin(A+B)

sinAcosB+cosAsinB

2
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cos(A+B)

cosAcosB-sinAsinB

3
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tan(A+B)

tanA+tanB / 1-tanAtanB

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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tan(A-B)

tanA-tanB / 1+tanAtanB

7
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sin2A

2sinAcosA

8
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cos2A

cos²A-sin²A OR 2cos²A-1 OR 1-2sin²A

9
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tan2A

2tanA / 1-tan²A

10
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When converting acosθ+bsinθ to Rsin(x±α) or Rcos(x±β), what is Rcosα equal to?

a

11
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When converting acosθ+bsinθ to Rsin(x±α) or Rcos(x±β), what is Rsinα equal to?

b