"And the equations that describe one? Form the basis of all trigonometry!" 'Ah! Okay, now I definitely have to take this job.' Lottie, you're … a fan of trigonometry? 'If it wasn't for trig, tiger, you wouldn't even be able to see me! Or the people watching wouldn't, anyway.' I thought we talked enough about engines in yesterday's episode. "What are you two talking about?" 'Ah … Trains!' Y-yeah …