40°
3X + 14
Please help me

x=42

Step-by-step explanation:

40+3x+14=180

-40 on both sides

3x+14=140

-14 on both sides

3x=126

divide 3 on both sides

x=42

3x+14+40=180[being supplementary]

3x=180-54

x=126/3

x=42 is a required answer.

< 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⭐