Choose all answers that apply:

a) ab and a'b' are both perpendicular to the x- axis

b) a and a' have the same coordinates.

c) ab and a'b' have the same lengths

d) none of the above

< 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⭐

the answer is y = 11.54

hope this : )