1. Lesson 3

1.9. Connect

Mathematics 20-3 Module 4

Module 4: The Right Kind Of Triangles

 

Connect

 

This is a photo of a rural school.

iStockphoto/Thinkstock

Going Beyond

 

If you're at a second-storey window or balcony, you can use your clinometer to determine the height of the window you are looking through. You can also measure a nearby tall object, such as a building, a tree, or a flagpole. You will also need a tape measure and your calculator.

 

Step 1: Use your tape measure to determine the horizontal distance from the window to the tall object.

 

Step 2: From the window or balcony, first measure the angle of elevation to the object's top. Then, measure the angle of depression to the object's bottom.

 

Step 3: To determine the height above ground of your window and the height of the tall object, answer the following questions.

  1. Identify the object you chose.

  2. Draw a diagram similar to the following one. Record the measurements.

     
    This is an example of a diagram used to determine the height of your window and the tall object using a clinometer.

  3. Determine x, y (the height of your window), and the total height of the object.
Lesson 3 Assignment

 


assignment

Your lesson assignment contains some problems for you to solve using knowledge gained during the lesson. Now you will have the chance to apply the concepts and strategies learned to a new situation. Show work to support your answers.

 

Open the Lesson 3 Assignment that you saved to your course folder and complete the questions.