Determine the wavelength of the scattered photon

[Mighalo]

Homework Statement

In a Compton scattering experiment, a photon is scattered through an angle of 90.0deg, and the electron is scattered through an angle of 18.3deg. Determine the wavelength of the scattered photon

2. Relevant equation

The Attempt at a Solution

[/B]I'm confused. I don't know how to go about this question

 

[PietKuip]

This is indeed a bit confusing. I suppose one can assume that the electron was at rest, and that 18.3 degree is the angle between the electron velocity and the continuation of the incoming photon.

Then apply conservation of energy and of momentum (relativistic).

 

[Mister T]

I'm confused. I don't know how to go about this question

Have you looked at the Compton scattering formula? I'd start there.