In Fig. 9, is shown a sector OAP of a circle with centre o, containing – InterviewSolution

1.	In Fig. 9, is shown a sector OAP of a circle with centre o, containing ABis perpendicular to the radius OA and meets OP produced at B. Prove that-1]the perimeter of shaded region is r tano + sec0 + 19180OAFigure 9
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