OB is perpendicular bisector of line segment DE, FA perpendicular OB and FE intersect OB at C. to prove : 1/OA+ 1/OB= 2/OC

Asked by deepika babbar | 9th Sep, 2013, 09:38: PM

Expert Answer:

Answered by Vimala Ramamurthy | 10th Sep, 2013, 12:14: PM

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