# Chapter 10 - Radical Expressions and Equations - 10-6 Trigonometric Ratios - Lesson Check: 2

3/5

#### Work Step by Step

Remember, for a right triangle, cos B is equal to side adjacent to angle B divided by the hypotenuse of the triangle. When we do this for the triangle in the problem, we find that cos B equals 6/10, which reduces to 3/5.

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