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Assignment: Right Angle Triangles MBF3C
1) Find the length of the indicated side.  each.
a)
b)
c)
2) Find the measure of the indicated angle.  each.
a)
b)
c)
Assignment: Right Angle Triangles MBF3C
3) Solve the following triangle. Remember, this means find the measures of all unknown lengths and
angles. Put a box around your answers to make them easy to find. 
Angle R =
Angle Q =
Side QR =
4) Mr. Smith is designing a garden in his backyard. The garden will be in the shape of a right-angle
triangle. Two sides of the pen are each 3m long. What is the length of the third side? Include a
diagram in your solution.

5) A wheelchair ramp at school has a vertical rise of 0.4m, and a horizontal run of 3.2m. Determine the
angle of inclination of the ramp. 
Assignment: Right Angle Triangles MBF3C
6)
From a rock ledge, the angle of elevation to
the top of a tree is 25o. The angle of depression
to the bottom of the tree is 10o.
a)
Find the height of the rock ledge. 
b)
Find the height of the tree. 
Hint: Use the 3rd example from today.
Assignment: Right Angle Triangles MBF3C
7) [10 marks] How much lumber (to one decimal place), would be needed to create the following
mono step-down roof truss?
For full marks your solution should be well organized, neat, and accurate. Again, round your sides to
one decimal place.
Hint #1: You can use Pythagorean theorem for the longest unknown side
Hint #2: The remaining six unknown lengths can be found by using right-angle trigonometry in the 3
smaller right triangles in the diagram.