Question

In a isocales triangle angleABC, the bisector of angle B and C meet of point o if angle a equalto 30degree than angle BOC equalto what

Answer 1

angle OBC=30 degrees angle OCB=degree , we know sum of all angle in a triangle =180 and in isosceles triangle each angle having 60 degrees

so, 180-( OBC+OCB)=180-(30+30)=120=BOC