Throughout this unit we not only reviewed trig but also learned new lessons. SOH CAH TOA can be rewritten as sin y/r, cos x/r and tan y/x.
we learned reference angles, which I find are easiest to solve when using a visual, such as a graph. The reference angle is determined by the closet x-axis, this will help decide whether or not you add or subtract from the degree of each quadrant.
we also learned the 2 special triangles. one we got by cutting a square in half and the other by cutting an equilateral triangle in half, these are used when we are asked for an exact ratio.
lastly we learned 2 new formulas, sin law and cosine law, these are used to solve non-right angle triangles, one or the other can only be used by fitting certain requirements