pl answer Q1
pl answer Q1 M.er.e than One correct Answer Type Given an isosceles triangle with equal sides of length b, base angle a < the radii and O, I the centres of the circumcircle and incircle, respectivley. Then b sin 2u B) A=2b2 A) R=—bcosec 2(1 + cos u) bcos(3a/2) D) 01 = 2 sin cos(u / 2)

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