A sketch of the graphs of two sinusoidal periodic functions F(X) & g((x) are shown below. The point P = (20,3), where the x-coordinate is given in degrees. From the plot and the information given; a) Determine the period and amplitude of each of these functions, and hence give Sine/Cosine formulae for them (preferably in a way that avoids the need to include a phase shift ?). b) Hence, or otherwise, evaluate f(x) + g(x) when x = 60, and 100.

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