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Find the angle between the pair of lines...

Find the angle between the pair of lines
`vec(r)=2hat(i)-5hat(j)+hat(k)+lamda(3hat(i)+2hat(j)+6hat(k))` and `vec(r)=7hat(i)-6hat(k)+hat(h)(hat(i)+2hat(j)+2hat(k))`

Text Solution

Verified by Experts

The correct Answer is:
`cos^(-1)(19/21)`
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