Two vectors and add to give a resultant that lies entirely along the positive -axis

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Two vectors P\mathbf{P} and Q\mathbf{Q} add to give a resultant that lies entirely along the positive yy-axis. What relation must hold between their xx-components PxP_x and QxQ_x? State the relation and give a brief reason.

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