Bab 3 Vektor
LKS 1
Soal dan Jawaban Matematika Kelas X Sukino
8. Titik P adalah pusat segi enam beraturan ABC.DEF. Jika PA = a dan CD = b , maka FD = ...
A. -2a - b
B. -a - 2b
C. a - 2b
D. 2a - b
E. 2a + b
Jawaban : A
PA = a dan CD = b
AP = - a dan DC = -b
FA = DC
PB = DC
BC = AP
FD = FP + PD
FD = FA + AP + PC + CD
FD = FA + AP + PB + BC + CD
FD = -b - a - b - a + b
FD = -2a -b
>>Soal 9
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