Answer:
∠3 = 62°
Explanation:
The diagonals of a kite are at right angles to each other, hence
Triangle containing ∠ 3 is a right triangle
The sum of the 3 angles in a triangle = 180°, thus
90 + 28 +∠3 = 180
118 + ∠3 = 180 ( subtract 118 from both sides )
∠3 = 62°