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a).Complete the table given below by filling the blank spaces.

b) On the grid provided draw on the same axes, the graph of y=4 cos2x and y=2 sin (2x +30) for `O^0 ≤ X ≤180^0`. Take the scale 1cm for`15^0` on
the x –axis and 1cm for 1 unit on the y-axis.
c) From your graph
i) State the amplitude of y= 4cos 2x.
ii) Find the period of y=2sin (2x +30)
d) Use your graph to solve
4cos 2x – 2sin (2x + 30) = 0