f x sin x a Sketch a clearly labeled graph of f x using a 1 1 scale b Explain why the slope of the tangent line to the graph of f at the origin x 0 is given by the limit lim x rightarrow 0 frac sin x x c Approximate the limit using a table of values d Use your result in c to find an equation for the tangent line to f at the origin and add a graph of it to