• Matematika
  • TRIGONOMETRI Kelas 11 SMA
  • Persamaan Trigonometri
  • Persamaan Trigonometri

Video solusi : If A, B, and C are the angles of a triangle, use the compound angle formula to prove that: a. sin(A+B)-sinC=0, b. cos(A+B)+cosC=0.

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