Lemma conflict_beta_theta : forall (intr : Trajectory) (evad : EvaderTrajectory) (T : TimeT), h intr = V -> (MinDistance T <= l intr evad T)%R -> (l intr evad T <= MaxDistance T)%R -> Omega (beta intr evad T + thetat intr 0) = false -> conflict intr evad T = true -> (beta intr evad T + thetat intr 0 <= MinBeta)%R \/ (2 * PI - MinBeta < beta intr evad T + thetat intr 0)%R.