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Q5) (a)Draw the graph of y = 4 tan⁡ 0.8x, for the range 0 ≤ x ≤ 1.4 in intervals of 0.2. (10)

Note that the angles x is in radian measure.

Suggested scales: horizontal axis 2 cm = 0.2

Vertical axis 2 cm = 1

(b) Using the same axes and scales, draw the graph of

y = 5/2 π - 4x , for the range 0 ≤ x ≤ 1.4, on the graph produced in Q5(a). (3)

(c) Use the graph plotted in Q5(a) and Q(5)(b) to solve the equation.

4(x + tan⁡ 0.8 ) = 5/2 π , for 0 ≤ x ≤ 1.4 . (3)