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Lesson 4

1. Lesson 4

1.2. Are You Ready?

Mathematics 20-3 Module 4

Module 4: The Right Kind Of Triangles

 

Are You Ready?

 

In previous mathematics courses you solved right triangles. To solve a right triangle means to find all of its missing measurements when given a side and an angle or two sides. Remember, the six parts of a triangle are the three sides and the three angles. Solving a right triangle is a necessary skill in applying trigonometry in problem situations.

  1. Solve given ∠A = 30°, ∠C = 90°, and c = 10 cm.

    This is an illustration of a right triangle.

    Answer

  2. Solve given ∠C = 90°, b = 5 cm, and c = 13 cm. Round to one decimal place if necessary.

    This is an illustration of a right triangle.

    Answer

  3. Sketch a labelled diagram to represent a slope of 2.87%. Label the legs of the triangle with possible lengths. Answer

  4. Sketch a labelled diagram to represent a 3:7 roof pitch. Label the legs of the triangle with possible lengths. Answer