Trigonometry Formulas

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Author:
rjweinfeld
ID:
219660
Filename:
Trigonometry Formulas
Updated:
2013-05-14 21:51:11
Tags:
Trig formulas
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Description:
Trig formulas
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  1. Sin(A+B)
    sinAcosB+cosAsinB
  2. Cos(A+B)
    cosAcosB-sinAsinB
  3. Sin(A-B)
    sinAcosB-sinBcosA
  4. Cos(A-B)
    cosAcosB+sinAsinB
  5. Tan(A+B)
    • tanA + tanB
    • 1 - tanAtanB
  6. Tan(A-B)
    • tanA - tan B
    • 1 + tanAtanB
  7. Sin(2A)
    2(sinAcosA)
  8. Cos(2A)
    cos2A-sin2A

    1 - 2sin2A

    2cos2A - 1
  9. Tan(2A)
    • 2tanA
    • 1-tan2A
  10. Sin(A/2)
    squareroot[(1-cosA)/2]
  11. Cos(A/2)
    squareroot[(1+cosA)/2]
  12. Tan(A/2)
    • sinA
    • 1+cosA

    • 1-cosA
    • sinA
  13. Cos(4A)
    8cos4A - 8cos2A + 1

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