** Katy finds the area under a sine wave from 0 to Pi **

(She used the same method that Archimedes used to find the area of a parabolic segment, which she saw in Don's worksheet book).

**Conclusions:**

**Note: Katy got an
approximation of 1.9742 . The exact answer is 2, and Katy was off by only about
3/200 =1.5% !**

**Great job Katy!!!**

^{Don's proof:}
^{=
-Cos[x]]}
^{= -Cos[p]-(-Cos[0])
= 1+1 =2}

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