Question 1165340
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \cos\(\frac{\pi}{2}\ -\ \varphi\)\ =\ \sin\varphi].


See the formula for the cosine of the difference between two angles.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \cos\beta\ =\ -\frac{3}{5}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \cos^2\beta\ =\ \frac{9}{25}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 1\ -\ \sin^2\beta\ =\ \frac{9}{25}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \sin^2\beta\ =\ \frac{16}{25}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \sin\beta\ \ \pm\frac{4}{5}]

																
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">


I > Ø
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