Chapter 6.CR, Problem 25CR

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6th Edition

Daniel C. Alexander + 1 other

ISBN: 9781285195698

Textbook Problem

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To determine

**To Find:**

The value of

Explanation

**Approach:**

**Theorem 6.1.1:**

A radius that is perpendicular to a chord bisects the chord.

**Theorem 6.1.8:**

Congruent chords are located at the same distance from the center of a circle.

**Calculation:**

Given that

So, DF and AC are congruent chords.

So, by **Theorem 6.1.8:**

Congruent chords are located at the same distance from the center of a circle.

DF and AC are at the same distance from the center of a circle

So,

But it is given that,

So,

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