Lesson 5

Explore

 

In Discover you explored a problem setting involving three dimensions. In this section you will examine a variety of problems containing more than one right triangle in three dimensions.

 

Try This 2

 

The Muttart Conservatory in Edmonton is comprised of four square pyramids. The largest pyramid has a base length of 25.7 m and a vertical height of 24 m. Architects needed to determine the angle at which to cut the glass for the face at each edge of the pyramid.

 

Open Trigonometric Ratios to help visualize the problem in three dimensions. Answer the question posed in the segment.

 

iStockphoto/Thinkstock

 

Save a copy of your answer to your course folder.

 

Share 2

 

Share your response to the question in Try This 2 with a classmate or in a group. Then draw two right triangles that help determine the angle at the edges of the pyramid.

 

If required, save a copy of your discussion and the triangles you drew in your course folder.