Can someone smart help me with this question fast plz

Step-by-step explanation:

Angle 4 is 81 so angle 3 is 99 (180-81=99)

Add 42+99=141

Subtract 141 from 180 and angle 2 is 39 degrees

Please mark brainliest and have a great day!

< 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 360 degree rotation

step-by-step explanation: