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rumus-penjumlahan-pengurangan-trigonometri

Rumus Penjumlahan dan Pengurangan Trigonometri

  • $\sin x+\sin y=2\sin\frac{1}{2}(x+y)\cos\frac{1}{2}(x-y)$
  • $\sin x-\sin y=2\cos\frac{1}{2}(x+y)\sin\frac{1}{2}(x-y)$
  • $\cos x+\cos y=2\cos\frac{1}{2}(x+y)\cos\frac{1}{2}(x-y)$
  • $\cos x-\cos y=-2\sin\frac{1}{2}(x+y)\sin\frac{1}{2}(x-y)$
rumus-penjumlahan-pengurangan-trigonometri.txt · Last modified: 08/03/2018 16:55 by Sopandi Ahmad