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Let ABCD be a parallelogram such that ve...

Let ABCD be a parallelogram such that `vec(AB)=vecq,vec(AD)= vecp and angle BAD` be an acute angle. If `vecr` is the vector that coincides with the altitude direacted from the vertex B to the side AD, then `vecr` is given by :

A

`vecr =3 vecq- (3 (vecp.vecq))/((vecp.vecp))vecp`

B

`vecr = -vecq+ (vecp.vecq)/(vecpvecp)) vecp`

C

`vecr = vecq - ((vecp.vecq)/(vecp.vecp))vecp`

D

`vecr =- 3 vecq + (3(vecp.vecq))/((vecp.vecp))vecp`

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The correct Answer is:
B
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