B.O.B for Trig Identities

This unit seemed to make a lot of sense.  The biggest part was figuring out how to manipulate each side of the equation to get to your desired expression.  It felt like a puzzle in that the goal was to move the pieces/identities around until both sides of the equation were equal.  The half angle and double angle formulas were not that bad consideirng we had a formula page.  It was similar to physics because you had to identify what you had and which equation made sense to use.  If you could make sense of the formula page and pick out what you needed, the ideas were pretty straight-forward.  The idea of verifying equations made sense to me especially as I tried ot keep the sin cos and tan functions as variables.  I also tried to keep the equation clean by getting rid of the theta or x at the beginning and then plugging it back until the end.  Obviously this cannot happen with the half/double angle formulas but it seemed to help with everything else.