This week in Math 10, we focused mainly on trigonometry review due to the unit test mid-week. Since I covered most of the unit in the last summary, this week I chose to answer the bonus question : How to use trigonometry to measure something around/near your home. I used a picture of my sister and created a question for each missing measurement.

1. On a summer day, the sun shines overhead of my sister Shelby, casting a 4.8ft shadow to the west across the pavement. Shelby is 5.6ft tall, what is the length from the top of Shelby’s head to the end of her shadow?
2. What is the angle of depression from Shelby’s head down to the pavement?
3. What is the angle of elevation from the pavement up to Shelby’s head?