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The frequency of sinusoidal wave n = 0.40 cos [2000 t +0.80] would be (a) 1000 Hz (b) 2000 Hz (c) 20 Hz 1000

The frequency of sinusoidal wave n = 0.40 cos [2000 t +0.80] would be (a) 1000 Hz (b) 2000 Hz (c) 20 Hz 1000 (d). Hz

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