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If hati+hatj+hatk, 2hati+5hatj, 3hati+2h...

If `hati+hatj+hatk, 2hati+5hatj, 3hati+2hatj-3hatk` and `hati-6hatj-hatk` are the position vectors of points A, B, C and D respectively, then find the angle between AB and CD. Deduce that AB and CD are collinear.

Text Solution

Verified by Experts

The correct Answer is:
`theta = pi`
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