1. Lesson 1

1.2. Are You Ready?

Mathematics 20-2 M1 Lesson 1

Module 1: Trigonometry

 
Are You Ready?

 

This section presents questions to help you determine if you have the skills and knowledge to complete this lesson successfully. Answer the questions and check your solutions. If you are experiencing difficulty, you may want to use the information in the Refresher section to clarify concepts before moving on to the Discover section.

  1. Find the unknown length. State your answers rounded to the nearest tenth.


    1. This is a picture of a right triangle with a 27 degree angle. The side opposite the 27 degree angle is labelled x, and the length of the hypotenuse is 25 m.

      Answer


    2. This is a picture of a right triangle with a 63 degree angle. The side opposite the 63 degree angle is 15 m, and the side adjacent to the 63 degree angle is labelled x.

      Answer


    3. This is a picture of a right triangle with a 48 degree angle. The side adjacent to the 48 degree angle is 8 m, and the hypotenuse is labelled y.

      Answer


    4. This is a picture of a right triangle. The hypotenuse is 9.2 m, one of the other two sides is labelled a, and the last side is 7 m.

      Answer

  2. Find the unknown angle. State your answers rounded to the newest whole number.


    1. This is a picture of a right triangle with one of the non-90 degree angles labelled theta. The side adjacent to theta is 4 cm, and the hypotenuse is 5 cm.

      Answer


    2. This is a picture of a right triangle with one of the non-90 degree angles labelled theta. The side opposite to theta is 4.3 cm, and the hypotenuse is 5.2 cm.

      Answer