Advanced Functions 7.3 Double Angle Formulas

In this lesson we will derive the double angle formulas, which is really easy now that you already know the addition subtraction formulas. I go through several example of what your homework assignment will focus on. Here's the link for some homework problems that I took up with my students. # 3a,c, 4, 9, 10, 13c, 15c http://mshavrot.pbworks.com/w/file/fe... In the last example there should be a radical sign over 2 - sqrt2 in the numerator ... (see, even teachers make silly mistakes!).