Tool: Law of Sines  Math Open Reference 


Go to:  http://www.mathopenref.com/lawofsines.html (opens a new window)  
Description:  A web page and interactive applet demonstrating the Law of Sines. The applet shows a triangle with draggable vertices. As you drag them, the "Law of Sines" ratio is continually recalculated, showing that it is the same for every side/opposite angle pair. The text on the web page explains the concept and has a worked example. It suggests an activity where the user turns off the onscreen calculation, tries it themselves and then turns the calculation back on to check their answer. Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com. 

Technology Type:  Flash  
Author:  John Page  
Language:  English  
Cost:  Does not require payment for use  
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Courses:  Geometry  Law of sines  
