Lesson 4: 8-5: Angles of Elevation and Depression
Duration of Days: 2
Lesson Objective
1. Solve problems involving angles of elevation and depression.
2. Use angles of elevation and depression to find the distance between two objects.
1. How do you know you are using an angle of elevation?
2. How do you know you are using an angle of depressioin?
3. How do you find an angle of elevation or depression?
Angle of Elevation
Angle of Depression
G.SRT.8
Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems.
An angle of elevation is the angle between the line of sight and the horizontal when an observer looks upward. An angle of depression is the angle between the line of sight and the horizontal when an observer looks downward. Trigonometric ratios can be used to solve problems involving these angles.
To make a field goal, a kicker must kick the ball with enough force and at an appropriate angle angle of elevation to ensure that the ball will reach the goalpost at a level high enough to make it over the horizontal bar. This angle must change depending on the initial placement of the ball away from the base of the goalpost.
Students approaching grade level can be given practice problems in small groups to work with other students or directly with the teacher.
Students beyond grade level can make deeper connections by finding angles of elevation and depression for different objects in the classroom.
Formative Assessment
Textbook in class
Access online textbook and resources through class link.