5.4 | Sum and Difference Formulas


Sum and Difference Formulas

  • \(\displaystyle \sin(u \pm v) = \sin u \cos v \pm \cos u \sin v\)
  • \(\displaystyle \cos(u \pm v) = \cos u \cos v \mp \sin u \sin v\)
  • \( \tan(u \pm v) = \dfrac{\tan u \pm \tan v}{1 \mp \tan u \tan v}\)

E 5.4 Exercises