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Math Graphs
Houghton Mifflin: Math Graphs: Tangent Line 4 [Pdf]
Students use a given graph and point to find an equation of the tangent line. The math graph is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Tangent Line 5 [Pdf]
Students determine the equation of the tangent line to the graph at a given point. The handout includes a graph that is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Tangent Line 6 [Pdf]
Students determine the equation of the tangent line to the graph at a given point. The handout includes a graph that is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Tangent Line 7 [Pdf]
The exercise explores the equation of the tangent line at a given point and graph. The handout includes a graph that is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Tangent Line 8 [Pdf]
The exercise explores the equation of the tangent line at a given point and graph. The handout includes a graph that is available in PDF format.
Johan Claeys
Math Abundance: The Circle: Basic Concepts
Goes over the equation of a circle, parametric equations of a circle, intersection of circle and line, tangent line in a point of a circle, etc.
University of Regina (Canada)
Univeristy of Regina: Math Central: Tangent Lines and Circle Equations
This site offers a problem and solution to finding all possible slopes for a line tangent to a circle given a particular equation of a circle. Could be an interesting challenge for students.
CK-12 Foundation
Ck 12: Analysis: Tangents to a Curve
[Free Registration/Login may be required to access all resource tools.] Calculate the equation of a line tangent to a single point
Johan Claeys
Math Abundance: The Parabola
Defines parabolas, their properties, gives parametric equations, tangent line in a point D of a parabola, etc.
Texas Instruments
Texas Instruments: Implicit Differentiation
Students differentiate an equation in two variables with respect to one. They calculate points where the tangent line is horizontal, vertical, or oblique and use the graphing capacity of the TI-89 to display the graph of the implicit...
Interactive Mathematics
Interactive Mathematics: Tangents and Normals
Finding the slopes and equations of the tangent and normal lines of curves is demonstrated using derivatives. Interactive examples are provided.
Other
Newton's Method
Come to this site to discover how the formula for finding the (n+1) approximation for the root using the equations of tangent lines (Newton's Method). The site also explains when Newton's Method fails.
CK-12 Foundation
Ck 12: Geometry: Properties of a Circle Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide reviews the terminology for circles (tangent, arcs, central angles) and the equation for a circle.
BBC
Bbc: The Circle
The equation of a circle is the focus of this site. Topics include tangents, intersecting circles, and intersection of lines and circles. Examples and a practice test are available.
Windstream
Ojk's Precalculus Study Page: Easier Trigonometric Equations
An introduction to solving trigonometric equations, including finding general and particular solutions. The connection between the tangent function and the slope of a line is also covered. Includes several examples and graphs.
Shodor Education Foundation
Shodor Interactivate: Derivate
View the graph and the equation of the line tangent to any function at any point on the function.
Illustrative Mathematics
Illustrative Mathematics: G Srt Ask the Pilot
In the July 2013 issue of United Airlines' Hemisphere Magazine, a pilot responded to a question about how far in the distance he could see at different altitudes. The solution involved right triangles, lines of tangency to a circle, and...