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)