Question: 1 . 3 4 Find ( a ) vec ( A ) + vec ( B ) + vec ( C ) ( b )

1.34 Find (a) vec(A)+vec(B)+vec(C)
(b) vec(A)-vec(B), and
(c) vec(A)-vec(C)
If vec(A)=7i-6j,vec(B)=-3i+12j, and vec(C)=4i-4j
Ans.: (a): A=8i+2j;B=2i+8j;C=4i+j;D=-8i-2j
(b) : A=10i-18j;B=18i-10j;C=10i+18j;D=-18i-10j
(c) : A=3i+2j;B=3i-2j;C=2i+3j;D=-2i-3j
1 . 3 4 Find ( a ) vec ( A ) + vec ( B ) + vec (

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