How to create clipping paths shape like a slice of a circle?

Question

I want to make a DVD label by dividing the circle into 8 equal slices (like cutting a pie 4 times). In each slice I will put an actor's photo in it.
I think I need to create 8 layers to house the 8 slices of photo, each layer gets a clipping path that is in the shape of a 45 degree slice of the circle. Once I have this setup I can paste photos into the layers and adjust the photos until it looks good in the confine of each slice.
The question is how to create these clipping paths in the shape of a slice of the pie? I have already drawn a 120mm circle (using the elipse path tool) denoting the outside boundary of the dvd label. But I don't know how to cut it into 8 precise slices of 45 degree each. Help?

Answer 1

Here's another way:
Make a circle and a square that covers one quadrant of the circle. Select the square with the Path Selection Tool. Edit > Free Transform, using the reference point that corresponds to the center of the circle, and 90 minus the angle of the slice into the Horizontal Skew field. Hint: you can copy the results from the Windows Calculator and paste them directly into Photoshop for this. This will give you greater precision that you might care to enter by hand.
Once you have committed the transform, select 'Intersect shape areas' in the option bar for the Path Selection Tool, and click Combine. There's your slice.