Weird equation

1. Oct 4, 2011

Black Integra

Hi guys.
I was trying to play with trig function and I finally ended up with this equation:

$\sqrt{2}sin(\frac{\pi}{2}-d\theta)=1-dx$

How can I determine a function $\Theta(x)$ from that equation?

2. Oct 4, 2011

vector22

1 - dx
is still undefined

3. Oct 5, 2011

Staff: Mentor

Your equation makes no sense. What was the equation you started with?