Which is a solution to the equation |10-5y| = 20?

{-2, 6}

Step-by-step explanation:

10-5y=20

-5y=10

y=-2

10-5y=-20

-5y=-30

y=6

< 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⭐