### Home > CCG > Chapter 11 > Lesson 11.2.1 > Problem 11-85

11-85.

The length of chord in

Draw a diagram and label with all known values.

Use

Find the measures of the other two angles:

Find the length of the radius either by using the Law of Sines, or by dividing the triangle into two equal right triangles and using trigonometry ratios.

Using the Law of Sines:

Using right triangles: