A secant and a tangent meet at a 90° angle outside the circle. What must be the difference between the measures of the intercepted arcs?
Circle X is shown in the diagram.





A circle is shown. Secant P N and tangent O N intersect at point N outside of the circle to form an angle with a measure of 45 degrees. The measure of arc M O is 83 degrees.

Circle P is shown. Tangents R S and T S intersect at point S outside of the circle to form angle x. The first arc formed is arc y, and the second arc formed is arc z.



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