(a) Complete the table below for the functions y = 2 Cos x and y = sin 2x

(a) Complete the table below for the functions y = 2 Cos x and y = sin2x for -180º ≤ x ≤ 180º


(b) On the grid provided, draw on the same axis the graphs of y = 2cos x and y sin 2x for -180º ≤ x ≤ 180º

(c) Use the graphs in (b) above to find;
(i) The values of x such that 2 cos x - sin 2x = 0
(ii) State the amplitude and period of graph y = 2 cos x.
(iii) Find the difference in the value of y when x = - 45⁰

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Wilfykil answered the question on September 11, 2019 at 09:42

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