Which equation shows the Identity Property of Multiplication ? A. a x 1
B. (a + b) + 3 = a + (3 + b)
C. a(b + c) = ab + ac
D. a + a + a = 3 x a

A. a × 1

Step-by-step explanation:

The identity property of multiplication simply states that a number equals itself when multiplied by 1.

a × 1 is the identity property of multiplication.

(a + b) + 3 = a + (3 + b) is associative property.

a(b + c) = ab + ac is expansion.

a + a + a = 3 x a is factoring of like terms.

< 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⭐