### Home > PC > Chapter 2 > Lesson 2.3.4 > Problem2-119

2-119.
1. Use the triangle to answer the problems below. Homework Help ✎

1. Find the exact lengths of the missing sides.

2. Write and simplify the cosine ratio for ∠A.

3. Write and simplify the sine ratio for ∠A.

Find the 3rd angle.
Then use the Law of Sines to find the other sides.

$\text{Cos}A=\frac{\text{adjacent side}}{\text{hypotenuse}}$

$\text{Sin}A=\frac{\text{opposite side}}{\text{hypotenuse}}$