Find vector AB and vector CD when A(2,3) B(-1,5) C(-1,1) D(-7,5)
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Step-by-step explanation:
Correct option is
C
7
1
The projection of the vector
AB
→
on the vector
CD
→
is
∣
∣
∣
∣
CD
∣
∣
∣
∣
AB
.
CD
=
∣(2i+3j−6k)∣
(5i−j+k).(2i+3j−6k)
=
7
1
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