Answer
180°-(49+90+x)
x=180°- 139
X=41°
Step-by-step explanation
Answer:

Step-by-step explanation
The standard equation of a circle centered at origin is 
r = radius of the circle
The circle is passing through the point (0,5)
∴ radius 



∴ The equation of the circle is

So r is a number that when you add to t it will increase so its
T + r