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O. P1: A sinusoidal wave is given by the equation y = 5.7 + 0.3cos(12.5x). a Write down the amplitude of the wave. 0 (1

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O. P1: A sinusoidal wave is given by the equation y = 5.7 + 0.3cos(12.5x). a Write down the amplitude of the wave. 0 (1 mark) b Find the minimum value of y and first the value of x for when this occurs. 15.7 (3 marks) c Find the period of the wave. (2 marks)

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