A signal has a fundamental frequency of 1000 Hz. What is its period, computer science homework help

A signal has a fundamental frequency of 1000 Hz. What is its period, computer science homework help

Some of the question I found them online please don’t copy the answer and I need to understand the answer so please show me the detailed answer, and you could use drawing 


1. A signal has a fundamental frequency of 1000 Hz. What is its period ?

 2. Express the following in the simplest form you can : a. Sin(2πft-π)+ Sin(2πft+π) b. Sin2πft+ Sin(2πft-π) 

3. If the solid curve in the next Figure represents Sin (2πt). What does the dotted curve represent? That is, the dotted curve can be written in the form ASin (2πft+φ). what are A, f, and φ ? See the picture

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4. Find the period of the function f(t)=(10Cos t)^2

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