Trig Identities

We started learning about trigonometric identities in class on Friday, but I was away for a football game. We continued learning about them (I began learning) on Monday, and I'm pretty sure I don't understand what I'm doing. Today, we continued with the stuff that seems like madness, and also learned how to find and check Extraneous Roots.

I haven't posted for a long time now. It's not that I haven't been learning anything, I have just been lazy I guess. For the last two weeks in math, we have learned how to solve 1st and 2nd degree trig equations, how to solve trig equations over the set of real numbers, and how to graph trig functions. These past few days we learned about transformational geometry, which is pretty confusing stuff. Today, we learned about flips, one-to-one functions, and Even/Odd functions.