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

Video solusi : In the trapezoid ABCD (figure below), AB//CD, |AB|=4 cm, and |CD|=10 cm. Suppose that lines AC and BD intersect at right angles, and that lines BC and DA, when extended to point O. form at angle of 45. Compute [ABCD], the area of trapezoid ABCD.

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