### Home > PC3 > Chapter 2 > Lesson 2.2.5 > Problem 2-119

2-119.

Use

Determine the exact length of

in terms of. What type of triangle is this?Use the Pythagorean Theorem.

Using the triangle, write the ratios for:

Use your results from part (b) to simplify

. What do you notice? It is the same as

.