Show me a shape with:
-2 right angles

-2 acute angles

-one reflex angle

don't post " i don't know. "

the answer to your question a or b but i am pretty sure it is b. i hope this : )

step-by-step explanation:

< 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⭐