# 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 $\sin^2(x)+\cos^2(x)$?

This code will not run. You have to choose a value for $A$ and $f$, the amplitude and frequency. We'd recommend starting with $A=50$, $f=0.01$. Can you do it? Dismiss.
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