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Introduction to Electric Circuits, 9th Edition by Richard C. Dorf, James A. Svoboda

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APPENDIX C images

Mathematical Formulas

C.1 Trigonometric Identities

  1. sin ( −α) = −sin α
  2. cos ( −α) = cos α
  3. sin α = cos (α − 90°) = −cos (α + 90°)
  4. cos α = −sin (α − 90°) = sin (α + 90°)
  5. sin α = −sin (α ± 180°)
  6. cos α = −cos (α ± 180°)
  7. sin (α ± β) = sin α cos β ± cos α sin β
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  10. sin 2α = 2 sin α cos α
  11. cos 2α = cos2α − sin2α
  12. 2 sin α sin β = cos (αβ) − cos (α + β)
  13. 2 sin α cos β = sin (α + β) + sin (αβ)
  14. 2 cos α cos β = cos (α + β) + cos (αβ)
  15. 2 sin2α = 1 − cos 2α
  16. 2 cos2α = 1 + cos 2α
  17. sin2α + cos2α = 1

C.2 Derivatives

The letters u and v represent functions of x, whereas a, b, and m are constants.

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C.3 Indefinite Integrals

The letters u and v represent functions of x, whereas a and b are constants. ...

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