Advanced Functions 7.3 Double Angle Formulas
Channel: Ms Havrot's Canadian University Math Prerequisites
Date: 2019-11-09

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/fetch/121989663/4U%20Movember%2028.pdf

In the last example there should be a radical sign over 2 - sqrt2 in the numerator ... (see, even teachers make silly mistakes!).