RejoiceIreayomide RejoiceIreayomide 19-10-2022 Mathematics Answered (a) Construct the graph of 2cos 3x + 1 in the range 0 ^ 0 <= x <= 120 ^ 0 at intervals of 15 ^ 0(b) Use your graph to find:(i) the maximum value of y;(ii) the minimum value of y;(iii) the value(s) of x at which2cos 3x + 1 = 0