What is the square root of -1? O -i O i O -1 O 1

Option B, i

Step-by-step explanation:

sqrt(-1) is i

 Option B, i

i got this square root(negative 1) =

i

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⭐