Question: a) Sketch the graph of y = sin 4x for 0 x 180. b) Find all the angles x in the interval 0

a) Sketch the graph of y = sin 4x for 0° ≤ x ≤ 180°.

b) Find all the angles x in the interval 0° ≤ x ≤ 180° for which

i) sin 4x = √3/2

ii) sin 4x = −1/2

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