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Complete the table given below for the functions y=-3 cos#2^0# and y=2sin(#2/3 x^0+30#) for #0^0lexle180^0#
(a) Using the grid provided, draw the graph of y=- 3 cos #2^0# and y=2 sin(#2/3 x^0+30#) on the same axis. Take 1 cm to represent #20^0# on the xaxis and 2 cm to represent one unit on the y- axis.
(b) From the graph, find the roots of 3 cos #2^0#+2 sin(#2/3 x^0+30#)
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