• Matematika
  • TRIGONOMETRI Kelas 11 SMA
  • Persamaan Trigonometri
  • Rumus Perkalian Sinus, Cosinus, Tangent

Video solusi : Given segitiga ABC where: x = tan(B-C/2) . tan(A/2) y = tan(C-A/2) . tan(B/2) z = tan(A-B/2) . tan(C/2) Prove that x+y+z+x.y.z = 0.

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