Trig Review Part 5
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Lesson Summary:
In this lesson, the teacher reviews how to graph the tangent function and then applies that knowledge to graph y equals the tangent of x over 3. The key takeaway is that the period of the tangent function is pi, but when the function is multiplied by a constant (in this case, 1/3), the period is stretched or compressed accordingly. As a result, the period of y equals tangent x over 3 is 3 pi.
Lesson Description:
Graphing y = tan(x/3)) and stating period. Solutions to a Review for a Trigonometry Test for a class. . See pdf on that site under Trig, special videos.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you graph trig functions?
- How do you graph y = tan(x/3)?
- How do you find the period of y = tan(x/3)?
- What is an asymptote?
- How do you know where asymptotes occur in a tangent graph?
- How do you know where the graph of a tangent function is positive, negative, 0, or undefined?
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Staff Review
This lesson does something very similar to the previous lessons, but this time the parent function used is tan x, which looks quite a bit different than sin or cos. The steps used and thought processes involved in graphing the function and finding the period are explained.
