Respuesta :

khalidzsarker010

Answer:

135°

Step-by-step explanation:

this is a cyclic quadrilateral, so the sum of opposite sides are 180
hence,

3x+6 + x+2 = 180
4x = 180 - (6+2)
4x = 172
x = 172/4
x = 43

therefore, m∠A is :

3(43) + 6
= 129 + 6
= 135°

hope it helps