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## Homework Statement

I have to find "sinθ" and "d" in the diffraction equation.

## Homework Equations

The formula is n(lambda) = d(sinθ)

I have the n, length, width, and hypotenuse.

http://img81.imageshack.us/my.php?image=captureee1.jpg

n=1, L=335 W=42.5 hyp=337.8

## The Attempt at a Solution

I forgot how to get the angle for sin. So i'm pretty much stuck.