### Home > INT3 > Chapter 9 > Lesson 9.1.2 > Problem 9-25

9-25.

What is the length of the side labeled ? Write your answers in exact form.

Either use the special right triangle side length ratios or the Law of Sines.

How can the Triangle Angle Sum Theorem help you find the missing angle?

Notice that this is a special right triangle with special side length ratios.