Diketahui Koordinat titik A (-8,7) , B (5,3) C (6,-9) dan D (-11,-12) tentukan kompenen vektor : a)AB b) BC c)DA
Jawaban:
a) AB = b – a
(5-(-8))i + (3-7)j = 13i + -5j = 13i – 5j
b) BC = c – b
(6-5)i + (-9-3)j = i + -12j = i -12j
c) DA = a – d
(-8-(-11))i + (7-(-12)j = 3i + 19j