Question

In an isosceles A ABC, the bisectors of B and C meet at a point O. I ZA = 40°, then
BOC-
(a) 110
(b) 70
(c) 130
(d) 150​

Answer 1

Answer:

In triangle ABC

angleB=angleC=x [isoscles triangle

x+x+40=180

2x+40=180

2x=140

x=70

in triangleBOC

X/2+X\2+angleBOC=180

angleBOC =180-70

BOC=110

ANS=A