How do I find the base and height? I know how to find the area, but I don't think I can find that without the base and height...

Hello! base = 47

Step-by-step explanation:

area = base × height ÷ 2 or base × height × 1/2

< 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⭐