Answer:
x = 42
Step-by-step explanation:
The figure given is a tangent kite
The angle between a tangent and the radius at the point of contact is 90°
The sum of the 4 angles in a tangent kite is 360°
sum the 4 angles, equate to 360 and solve for x
x + 90 + 138 + 90 = 360
x + 318 = 360 ( subtract 318 from both sides )
x = 42