Which of the following represents a null set? A. [Dogs with 6 eyes]
B. [Grains of sand on the seashore]
C. [Kaydian, betty, pam, jane]
D. [N, u, l, I]

< 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⭐

answer: i don't understand. what are the options

step-by-step explanation:

answer: 1+1

step-by-step explanation: 1+1 is at least 2

answer: i could not see part the question so ill explain how to get the answer

step-by-step explanation: for instance the distance she travele d is 10 and she traveled the same amout each mile so do 10 divided by how many miles she drove each time and you ge your answer.