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The condition for collinearity for the t...

The condition for collinearity for the two parallel lines `vec(r)=vec(a)+tvec(b)" and " vec(r)=vec(a)_(1)+svec(b)` is

A

`|(vec(a)-vec(a)_(1))*vec(b)|=0`

B

`|(vec(a)+vec(a)_(1))*vec(b)|=0`

C

`|(vec(a)+vec(a)_(1))xxvec(b)|=0`

D

`|(vec(a)-vec(a)_(1))xxvec(b)|=0`

Text Solution

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The correct Answer is:
D
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CHHAYA PUBLICATION-STRAIGHT LINE IN THREE DIMENSINAL SPACE -Exercise 4A
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