# Compton photon scattering

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if the compton wavelength shift is in scattering an electron is 0.29 pico-m, what is the photon scattering angle? (you make take T=600K)

I dont know why I was told the that T=600K?

$$\Delta \lambda= \frac{h}{mc} (1-cos\theta)$$

$$\frac{h}{mc}=0.00243 nm$$

$$0.119341564=1-cos\theta$$

$$\theta=28.278 degrees$$

i dont see where the temperature comes in.
is my work correct?