Sinusoidal Function Model: FCA = 2.6 COS ( Q-12) + 48 2. Write the complex numbers in polar form a. -1+ 2i (= Vaz+62 tan - 1 _ US vity - VS H levi - 11. 15026 and - 1 b. 4i VIG = 4 x , y tan = 4 21. 325 3. r = f(0) = 4 sin 20 6 2 TT 3TC 3 6 0 0.87 4 0.87 0 -0.87 -4 -0.87 0 a. Interval(s) where f is increasing: (0/ J/() b. Interval(s) where f is decreasing: ( ST / 2, 3 Ji/4 37/4 and 3 51 14 c. Are there any relative extrema on the interval [0, 2n]?' d. Interval where the distance between f and the pole is increasing: ( O, Jt/ ? ) Interval where the distance between f and the pole is decreasing: ( J Find the average rate of change between 0 = and 0 = >