1. how do you find the sine, cosine, and tangent values given a point on a circle? be able to provide an example. 2. describe how to transform a trigonometric function from the standard trig function f(x) = sin x, f(x) = cos x, or f(x) = tan x using key features. include amplitude, period, phase shift, vertical shift, the minimum point and a maximum point. 3. where does the pythagorean identity sin2 θ + cos2 θ = 1 come from? given the cos θ = 4/5, how would you use it to find the sine and tangent values of the angle? explain. 4. describe the differences in the graphs of the sin, cosine and tangent functions.