Lesson goal: Graphically adding $\sin^2+\cos^2$

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Here is a graphical version that proves that $\sin^2(x)+\cos^2(x)=1$. We did a textual version of this in a past lesson. This one allows you to really see the behavior of the sine vs the cosine and see how they add after each is squared.

Now you try. Try fixing the A= and f= statements. Can you see the graphical verification of $\sin^2(x)+\cos^2(x)$?

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