What is 2v+4 if v=2
...

8

You do the multiplication first and 2 times equals 4. Then, you add 4 to 4 to get 8.

i dont know and i dont care for math bc it is a stupied subject

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⭐