Quadrilateral abcd is a square. bc = 10 what is the length of ac? a. 10 sqrt 2 b. 20 sqrt 3 c. 10 sqrt 3 d. sqrt 100

A is the correct answer to this question because AC and BC differ because the B must be changed to an A.

< 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⭐

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .