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Let vec(a)=hati+hatj+hatk,vec(b)=hati an...

Let `vec(a)=hati+hatj+hatk,vec(b)=hati` and `vec( c )=c_(1)hati+c_(2)hatj+c_(3)hatk`. Then
If `c_(1)=1` and `c_(2)=2` find `c_(3)` which makes `vec(a),vec(b)` and `vec( c )` coplanar.

Text Solution

Verified by Experts

The correct Answer is:
`:.-c_(3)+2=0=>c_(3)=2`
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