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# Law of Cosines Solving for Angles Spring 2014

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0.12 MB   |   3 pages

### PRODUCT DESCRIPTION

This worksheet is designed to replace a lecture on how to use the law of cosines to determine an unknown angle of a triangle. It does not include the ambiguous case in which there may be more than one correct solution.

I start out class with a 15-minute "mini-lesson," giving my students some basic examples of what today's lesson will be about: I put up a triangle in which three sides are known, and we calculate one or two of the unknown angles. Once the mini-lesson is over, I have them get to work within their groups on this worksheet.

I use this activity within cooperative groups, and I circulate to make sure they are getting the purpose of the questions.

The file includes spiral review problems.

This worksheet is intended to be written on directly.

Please download the pdf preview file first, so you can see exactly what's included; the product file is a word document, which you may personalize for your students.

Immediately before this worksheet, I use the worksheet named 'Law of Cosines Solving for Sides Spring 2014' (http://www.teacherspayteachers.com/Product/Law-of-Cosines-Solving-for-Sides-Spring-2014-1267672), and immediately after this worksheet, I use the assessment named 'Geometry Group Practice Test Radicals Proportions Similarity Trig Spring 2014' (http://www.teacherspayteachers.com/Product/Geometry-Group-Practice-Test-Radicals-Proportions-Similarity-Trig-Spring-2014-1267693)

Keywords: Jonnard
Total Pages
3
Not Included
Teaching Duration
1 hour

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