What does the graph ${cos}^{2} (x)$ $cos^2(x)$ look like?

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Answer 1 · 2015-09-19T21:39:34

Have a look:

This is the same as the normal $cos$ $cos$ where the negative bits became positive because of the square:
Graphically:
enter image source here

What does the graph cos^2(x)cos2(x)cos^2(x) look like?