Khan Academy: Trigonometry: Graphs of Trig Functions

Calculators ... they are more efficient than tables. Using two 30-60 right triangles, the segment of a playlist on geometry shows that trigonometric ratios for an angle are the same independent of the size of the triangle. The video...

This video demonstrates how to graph a linear equation by creating a table of x, y values to use as coordinates for the graph of the line. The second example demonstrates how to take a word problem and create a table of values to graph...

Given a sine, cosine, or tangent value, find the principle angle that has this value. In other words, find the arcsine, arccosine, or arctangent of that value. Students receive immediate feedback and have the opportunity to try questions...

Video shows solving a trigonometry problem to find the number of values in a given range that satisfy certain conditions. Trigonometric identities are used. [12:49]

Video demonstrates finding the maximum of a trigonometric expression that is simplified by using trigonometric identities. [9:54]

Video showing how to derive the graph of the sine function from the unit circle. Includes link to additional practice problems. [7:44]

[Free Registration/Login may be required to access all resource tools.] How to Compose a trigonometric function.

[Free Registration/Login may be required to access all resource tools.] This lesson uses trigonometric identities to prove other identities.

Video deriving the double angle formulas for sine and cosine as well as the start of finding the cosine of the opposite of an angle. Reviews basic trigonometric ratio definitions and some basic trigonometric identities. [9:57]

Video expands upon trigonometric identities derived in previous videos. Identities in this lesson include sine and cosine of the opposite of an angle, sine of an angle plus pi divided by two, and the sine of the difference of two angles....