Question

Sketch the following graph in given range

y = 3Cos x -1
0 ≤ x ≤ 2π

The graph meets the y axis at point A and the x axis at points C and D.

The point B is the first minimum of the graph for which x > o

a) State the coordinates of A and B.
b) Determine the coordinates of C and D, correct to three significant figures.

Answer 1

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Answer 2

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