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Find the value of p for which the vector...

Find the value of p for which the vectors `vec(a) = 3hat(i) + 2hat(j) + 9hat(k)` and `vec(b) = hat(i) + p hat(j) + 3hat(k)` are
(i) perpendicular. (ii) parallel.

Text Solution

Verified by Experts

The correct Answer is:
`p = (2)/(3)`
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