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If veca=6veci+2vecj+3veck and vecb=2veci...

If `veca=6veci+2vecj+3veck and vecb=2veci-9vecj+6veck` then find `veca.vecb` and the angle between `veca and vecb`.

Text Solution

Verified by Experts

The correct Answer is:
`cos^(-1)((12)/(77))`.
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