Lesson 2: The Sine and Cosine Ratios - Sine and Cosine Ratios Table and Calculator Use Practice

   Practice Makes Perfect

Download Practice Makes Perfect as a pdf file to print off, complete, and save in your Math 10-3 binder, or write the answers in a notebook specifically for Math 10-3 notes.

Complete the following questions.


  1. Use a calculator to determine the value of y in each of the following equations. Express angle measures to the nearest degree, and ratios to the nearest hundredth.

    1. sin 71° = y

    2. cos 71° = y

    3. sin y = 0.39

    4. cos y = 0.92


Check your answers in the detailed solutions found here. Practice is important before you attempt the Chapter 4, Lesson 2 Assignment.



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