Answer:
x=0
Explanation:
Tangent Chord Angle = 1/2 Intercepted Arc
A circle is 360 degrees
The missing arc is
360 - (2x+260)
360 -2x-260
100 -2x
Using the formula
50 = 1/2(100-2x)
50 = 50 -x
Subtract 50 from each side
0 = -x
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