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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_(2)=-1` and `c_(3)=1`. Show that no value of `c_(1)` can make `vec(a),vec(b)` and `vec( c )` coplanar.

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The correct Answer is:
Hence, no value of `c_(1)` can make `vec(a),vec(b)` and `vec( c )` coplanar.
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