COPY THIS WHAT I WRITE IN UNDER↓↓↓↓↓ \bcancel{\huge\pink{\fbox{\tt{࿐αɴѕω єя࿐}

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AND THAN PASTE IT'S SHOWING IN THE ATTECHMENT

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Step-by-step explanation:

Omg it's working lol........

d≈7.07in

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⭐