Reference Angles & the Unit Circle Video


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question 1 of 3

cos 240 = ?

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1. cos 180 = ?

2. sin 150 = ?

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About This Quiz & Worksheet

This quiz/worksheet contains practice problems designed to test your aptitude when it comes to mathematical actions having to do with reference angles and the unit circle.

Quiz & Worksheet Goals

In these assessments, you'll be tested on practice problems involving:

  • Cos
  • Sin
  • Fractions

Skills Practiced

  • Practice problems - use acquired knowledge to solve practice problems using the cos and sin function
  • Distinguishing differences - ensure that you can differentiate between the mathematical functions of cos and sin
  • Knowledge application - use your knowledge to answer questions containing parentheses

Additional Learning

To learn more about the mathematic applications of reference angles and the unit circle, you can review the accompanying lesson titled Reference Angles and the Unit Circle. This lesson is made up of the following objectives:

  • Describe the unit circle
  • Differentiate between degrees and radians
  • Know what constitutes a reference angle
  • Familiarize yourself with how reference angles and unit circles are used to solve problems through provided examples