(adsbygoogle = window.adsbygoogle || []).push({}); "Waves" of sine expression

So, I have been working with a lot of Math today(sorry if I am asking so many questions), and I found and expression. All sine functions use radians.

sin(y) + sin(y) / sin(y)

Now, assuming you start with 1, if you were to plot y on a graph with variable x increasing each time calculated, you would get something like this:

This image isn't mine, so this is just something identicle.

Can this be explained?

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# Waves of sine expression

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