If control charting shows that the number of nonconforming items in various lots is in control, we can conclude that a. the manufacturing process was in control b. the product was well mixed before dividing into lots c. either a or b is true d. all lots should be accepted

< 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⭐

knlknlkkn

step-by-step explanation:

7

step-by-step explanation: