The number of grams of is one hundredth of a kilogram is​

I don't understand your question. Do you mean "Is the number of grams one hundredth of a kilogram?"

Or did you mean, "The number of grams is one hundredth of a kilogram, what's that in grams?" ?

Edit your question, please.

< 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⭐