Analyze the diagram below ad complete the instructions that follows. identify a pair of vertical angles in the figure.
a) ace and bce b) fce and eca c) dfh and gfh d) gfh and efc

< 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⭐

don't report but were is the digram

step-by-step explanation: