Answer:
∠3 = 90°
Step-by-step explanation:
∠4 = ( 4x + 22 )° [ Vertically opposite angles ]
∠4 = ( -6x + 192)° [ Corresponding angles ]
Therefore ,
4x + 22 = - 6x + 192
4x + 6x = 192 - 22
10x = 170
x = 17
∠4 = 4x + 22 = (4 × 17 ) + 22 = 90°
∠4 = 90°
∠3 + ∠4 = 180°
∠3 + 90° = 180°
∠3 = 180° - 90°
∠3 = 90°
