Will give a set of equations is given below: equation s: y = x + 9 equation t: y = 2x + 1 which of the following steps can be used to find the solution to the set of equations? a- x = 2x + 1 b- x + 9 = 2x c- x + 1 = 2x + 9 d- x + 9 = 2x + 1

< 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⭐