The midpoint of AB is M (5,6). if the coordinates of A are (3,8), what are the coordinates of B

  (7,4)

Step-by-step explanation:

Hope this helps you guys. the other dude worded it the wrong way. this is the correct way! have a nice day guys

< 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⭐