# math

(sinx)^(1/2)=cosx
x is between 0 and 90
What is sinx

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1. sinx = cos^2x
sinx = 1-sin^2x
sin^2x + sinx - 1 = 0

now solve for sinx, and pick the positive solution.

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2. Hey, one of my favourite numbers.
sinx = .618033989..
which is the decimal part of the Golden Ratio !
Neat!

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3. the nice thing about Ø is that

Ø-1 = 1/Ø

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