Question

In a triangle abc, i is the in centre and angle a is 80, find angle bic

Answer 1

Answer:

Step-by-step explanation:

Suppose triangle abc is in a circle,

then i is the centre of the circle,

So, angle bic is a central angle,

angle bac is inscribed in arc bc,

angle bac = 1/2 m(arc bc)

80 = 1/2 m(arc bc)

80x2 = m(arc bc)

m(arc bc) = 160*

m(arc bc) = angle bic,

Angle bic = 160*