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Prove that the lines OA and OB are perpendicular where A, B are the points (4, 3) and (3, -4) respectively. Here O represent the

Prove that the lines OA and OB are perpendicular where A, B are the points (4, 3) and (3, -4) respectively. Here O represent the origin. Also sketch the two lines on same axes to show the perpendicularity.

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