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If bar(a)=2bari+4barj-5bark,bar(b)=bar(i...

If `bar(a)=2bari+4barj-5bark,bar(b)=bar(i)+bar(j)+bar(k)and bar(c)=bar(j)+2bar(k)` . Find the unit vector in the opposite direction of `bar(a)+bar(b)+bar(c)`.

Text Solution

Verified by Experts

The correct Answer is:
`-1/7(3bar(i)+6bar(j)-2bar(k))`
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