# Chapter 13, Trigonometric Ratios and Functions - 13.2 Define General Angles and Use Radian Measure - 13.2 Exercises - Skill Practice - Page 863: 45

$\approx0.9749$

#### Work Step by Step

Using the calculator in radian mode we get: $\sin{\frac{3\pi}{7}}=\approx0.9749$

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