Objective

To explore the concept of double angles and use formulas to calculate their values.

Web Resources

http://www.regentsprep.org/Regents/math/algtrig/ATT14/formulaprac.htm        Practice Problems:  Sum and Difference, Double Angle, & Half Angle

http://www.cliffsnotes.com/study_guide/DoubleAngle-and-HalfAngle-Identities.topicArticleId-11658,articleId-11612.html   Notes with Examples on Double & Half Angle

http://hotmath.com/hotmath_help/topics/double-angle-and-half-angle-identities.html        Examples with step-by-step solutions

http://www.intmath.com/analytic-trigonometry/3-double-angle-formulas.php        Notes, Examples, and Practice Problems with Solutions

Pay Attention to the Following: