The figure below shows a house with an attic, represented by triangle ABC with AC =BC. The distance from A to B is 42 feet. The slope of the roof is 2/3. How many feet tall is the height, h, of the attic?

the correct answer is the second option

< 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⭐