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Question

If a =^i+^j,b =^i+^j+2^k and c =2^i+^j^k. Then altitude of the parallelopiped formed by the vectors a,b,c having base formed by b and c is (a,b,c and a,b,c are reciprocal system of vectors)


Your Answer
A
1
Your Answer
B
322
Your Answer
C
16
Correct Answer
D
12

Solution

The correct option is D 12
Volume of the parallelepiped formed by a ,b ,c  is 4
Volume of the parallelepiped formed by a,b,c is 14
b×c=14a b×c=24=122
length of altitude = 14×22=12.

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