What is the main benefit of this model? A. It helps make predictions about the number of sides in a triangle B. It shows a pattern for determining the side lengths of a triangle.
C. It shows the shape and parts of a triangle.
D. It helps visualize the features of a triangle.

The answer is B. It shows a pattern for determining the side lengths of a triangle

Step-by-step explanation:

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐