Answer:
b
Step-by-step explanation:
Answer: AC=4.15
Step-by-step explanation:
To solve this problem you must apply the prccedure shown below:
1. You know that the triangle is a right triangle.
2. Therfore, you can calculate the lenght AC as following:

Where:
opposite=AC
adjacent=8.9
3. When you solve for AC and substitute these values you obtain the following result:

Answer:
Answer your own question.
Step-by-step explanation:
Listen to your teacher.