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Let vecb and vecc be non-collinear vecto...

Let `vecb` and `vecc` be non-collinear vectors. If `veca` is a vector such that `veca.(vecb+vecc)=4` and `veca xx (vecb xx vecc) =(x^(2)-2x + 6)vecb + siny.vecc`, then [x,y] is lies on the line:

A

x+y=0

B

x-y=0

C

x=1

D

`y=pi`

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The correct Answer is:
C
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