Trigonometric Functions: Graphing Trigonometric Functions

think icon Think & Click: Domain of Trigonometric Functions

Now, you try. Complete the Think & Click activity by looking at each problem below, thinking about it, and then clicking on the question to reveal the solution.

Find the domain and range of y = 2cos(x).
 

The domain is All Real Numbers.
Since the amplitude of the equation is 2 the range is -2 ≤ y ≤ 2.
 

Find the domain and range of y = tan(x) + 2.
 

The domain is All Real Numbers except x = 90° + n180°.
The range is All Real Numbers.
 


If you need extra practice graphing trigonometric functions, check out this interactive activity about graphing a sine function:

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Review Icon Review Worksheet

Complete the review worksheet for this section before taking the quiz. Download the review worksheet, complete the questions, and then download the answer key to check your work. Make sure to ask your teacher any questions.