### Volume 3, Number 5

 ``` 2 February 1998 Vol. 3, No. 5 THE MATH FORUM INTERNET NEWS Trig Course - Joyce | Math Teaching Ctr - Exeter |Organizations A SHORT COURSE IN TRIGONOMETRY - David Joyce http://aleph0.clarku.edu/~djoyce/java/trig/ What is Trigonometry? Trigonometry began as the computational component of geometry. One statement of plane geometry says that given one side and two angles of a triangle, the other two sides and the remaining angle are determined. Trigonometry includes the methods for computing those other two sides. (The remaining angle is easy to find since the sum of the three angles equals 180 degrees.) Joyce organizes his course around these headings: - Who should take this course? - Applications of trigonometry - What is trigonometry? - Angle measurement - Chords - Sines - Cosines - Tangents and slope - The trigonometry of right triangles - The trigonometry of oblique triangles - Summary of trigonometric identities - Polar coordinates (yet to be written) With a Java-enabled browser you can drag the points in the diagrams and see the results of your readjustments. More Internet resources for trigonometry are highlighted by StudyWeb and the UTK Math Archives, and an extensive list is available from the Math Forum: http://www.studyWeb.com/math/trigonometry.htm http://archives.math.utk.edu/topics/trigonometry.html http://mathforum.org/~steve/steve/mathtrig.html -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- THE CENTRE FOR INNOVATION IN MATHEMATICS TEACHING UNIVERSITY OF EXETER, UNITED KINGDOM http://www.ex.ac.uk/cimt/ The Centre offers a variety of resources for research and curriculum development in mathematics teaching and learning in schools and colleges: - Resources/Worksheets - Data Bank - Puzzles, Pastimes and Competitions - Games - Computer Programs - Recreational Mathematics - General Guide to Other Sources of Mathematics on the Web Worksheets currently available cover bar codes, pipelines, posting parcels, genetic fingerprinting, postcodes, time zones, birthdays, recurring decimals, a dipstick problem, hill walking, and minimum wrapping. Other teaching resources include blank grids, fact sheets suitable for handouts, exercises and practice sheets, and teachers' notes. The site also provides a Dictionary of Measures, Units, and Conversions: http://www.ex.ac.uk/cimt/dictunit/dictunit.htm -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- MAJOR U.S. MATH ORGANIZATIONS ON THE WEB A short list of sites to explore: - Adult Numeracy Practitioners Network (ANPN) http://www.std.com/anpn/ - American Mathematical Association of Two-Year Colleges (AMATYC) http://www.amatyc.org/ - American Mathematical Society (AMS) (e-MATH) http://www.ams.org/ - American Statistical Association (ASA) http://www.amstat.org/ - MAA Online: Mathematical Association of America http://www.maa.org/ - National Association of Mathematicians (NAM) http://dimacs.rutgers.edu/~nate/orgs/nam/ - National Council of Teachers of Mathematics (NCTM) http://www.nctm.org/ - Society for Industrial and Applied Mathematics (SIAM) http://www.siam.org/ -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- CHECK OUT OUR WEB SITE: The Math Forum http://mathforum.org/ Ask Dr. Math http://mathforum.org/dr.math/ Problems of the Week http://mathforum.org/students/ Internet Resources http://mathforum.org/~steve/ Join the Math Forum http://mathforum.org/join.forum.html Send comments to the Math Forum Internet Newsletter editors _o \o_ __| \ / |__ o _ o/ \o/ __|- __/ \__/o \o | o/ o/__/ /\ /| | \ \ / \ / \ /o\ / \ / \ / | / \ / \ ```