The graph of a limacon curve is given. Without using your graphing calculator, determine which equation is correct for the graph.

[-5, 5] by [-5, 5]

A. r = 2 + 3 cos θ
B. r = 3 + 2 cos θ
C. r = 2 + 2 cos θ
D. r = 4 + cos θ

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b