Trig Review Part 2
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Lesson Summary:
In this Trig Review Part 2 lesson, you will learn how to determine if the tangent of a real number is positive or negative by finding its location on the unit circle. You will also discover how to graph a sine function with a negative amplitude and find its amplitude, period, phase shift, and vertical shift. By knowing the basic sine function and how to manipulate it, you will be able to graph negative amplitude sine functions with ease.
Lesson Description:
Determining if the tan(4) is positive or negative; Graphing y = -2sin(x), and stating amplitude. 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 can you determine if tan(4) is positive or negative?
- How can you estimate how far along the unit circle 4 is?
- How do you graph y = -2*sin(x)?
- How do you find the period and amplitude of a trig function like y = -2*sin(x)?
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Staff Review
This lesson helps you visualize where a number like 4 is on the unit circle and whether the value of tan 4 would be positive or negative. Also reviewed is the graph of -2*sin(x) and how to find its amplitude and period.
