Matematika

Pertanyaan

Diketahui titik a (2,0,-3)
Titik b (5,2,-1)
Titik c (7,3,-2)
Tentukan vektor AB,AC,BC

1 Jawaban

  • jawab

    A(2,0, 3)
    B(5, 2, -1)
    C(7, 3, -2)

    AB = b - a =  { (5-2) , (2-0), (-1-3)}
    AB = (3, 2, - 4)
    vektor AB = 3i + 2j - 4k

    AC = c - a = {(7-2), (3-0), (-2+3)}
    AC = (5, 3, 1)
    AC = 5i + 3j + k

    BC = c - b = {(7-5),(3-2),(-2-(-1)}
    BC = (2, 1, -1)
    BC = 2i +j - k

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