HELP PLZ HURRY 100 POINTS

< 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⭐

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

d

step-by-step explanation:

i used the pitagoras theoreme