Real math help.
What Does the Graph of the Cosine Function Look Like?
Note:
You can use the unit circle to help you graph the cosine function! In this tutorial, you'll learn how to do exactly that!
Background Tutorials
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X- and Y-Intercepts
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What's the X-Intercept?
When you have a linear equation, the x-intercept is the point where the graph of the line crosses the x-axis. In this tutorial, learn about the x-intercept. Check it out!
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Ordered Pairs and The Coordinate Plane
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What is the Origin?
The coordinate plane has two axes: the horizontal and vertical axes. These two axes intersect one another at a point called the origin. Learn about the ordered pair that indicates the origin and its location in the coordinate plane by watching this tutorial!
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What is the Coordinate Plane?
You can't graph a function or plot ordered pairs without a coordinate plane! Learn about the coordinate plane by watching this tutorial.
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Relations
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What is Domain?
Did you know that a relation has a domain? The domain of a relation is the set of the first coordinates from the ordered pairs. This tutorial defines the domain of a relation!
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What is the Range of a Relation?
Did you know that a relation has a range? The range of a relation is the set of the second coordinates from the ordered pairs. This tutorial defines the range of a relation!
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Angles and Radians
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What is an Angle in Standard Position?
Understanding how angles are made in the coordinate plane is a big step towards understanding trigonometry. This tutorial shows you how an angle can be made in the coordinate plane!
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Introduction to Periodic Functions
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What is a Periodic Function?
Periodic functions have some special qualities! In this tutorial, you'll be introduced to these functions and learn what a graph must have to be called a periodic function.
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Further Exploration
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Graphing Tangent and Cotangent Functions
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What Does the Graph of the Tangent Function Look Like?
If you want to make the graph of the tangent function, you can use the unit circle to help you plot points. This tutorial shows you how to use the unit circle to make the tangent function graph!
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