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Two concentric circles, radii R & r, R>r. From a point P, on the smaller circle, a straight line is drawn that intersects the larger circle at B and C. The perpendicular to BC at P intersects the smaller circle at A. Show PA2+B2+C2 = 2 (2+2)?

Two concentric circles radii R amp r Rgtr From a point P on the smaller circle a straight line is drawn that intersects the larger circle at B and C The perpend class=

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