In R?, using vectors and angle between vectors, verify that the points P (13, –1 Q(-9,3) and R (-3, –9) are vertices of a right triangle. Also, identify the verte with the right, angle

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A: 2(x2+y2)2=25(x2-y2)2(x4+y4+2x2y2)=25x2-25y22x4-25x2=-25y2-2y4-4x2y22x4-25x2=-25y2+2y4+4x2y2different…

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