sqrt( [1/sqrt(1-[0.6]^2)*0.5+1/sqrt(1-[0.65]^2)*0.41]^2 + [1/sqrt(1-[0.6]^2)*0.5*0.6-1/sqrt(1-[0.65]^2)*0.41*0.65]^2)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.