Which set of values is a function? (3,4) (4,-3) (7,4) (3, 8) (9,5) (10,5) (9,-5) (10,-5) (2, -2) (5, 9) (5, -7) (1, 4) (6,-5) (7, -3) (8, -1) (9, 1)

answer:

(3,4) (4,-3) (7,4) (3, 8) (9,5) (10,5) (9,-5) (10,-5) (2, -2) (5, 9) (5, -7) (1, 4) (6,-5) (7, -3) (8, -1) (9, 1)

step-by-step explanation:

< 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⭐

use formula for the circle a=3.14

step-by-step explanation: