Chapter 6.CR, Problem 9CR

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7th Edition

Alexander + 2 others

ISBN: 9781337614085

Textbook Problem

*In Review Exercises 5 to 10,**is tangent to the circle at point A in the figure shown.*

To determine

**To find:**

Explanation

**Theorem:**

1) The measure of an angle formed when two secants intersect at a point outside the circle is one-half the difference of the measures of two intercepted arcs.

2) The measure of an inscribed angle of a circle is one-half the measure of its intercepted arc.

**Calculation:**

Given that

By theorem, the measure of an angle

So,

So,

Now,

Since, C is the midpoint of

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