3
2
÷ 1
8

Choose the correct use of the rule for this problem.

Two-thirds times one-eighth = StartFraction 1 Over 12 EndFraction
Three-halves times 8 = 12
Three-halves times StartFraction 1 Over 8 EndFraction = StartFraction 3 Over 16 EndFraction
Two-thirds times 8 = 5 and one-third

< 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⭐