Can someone explain this shadow problem to me?
Calc quiz tomorrow morning. First semester premed worried about my GPA. What if I get a C or something in calc? I'm at around a B rn.
I can do differentiation, implicit differentiation, ik all the trig derivatives, I know how to find derivative of an inverse trig function, I know how to find the derivative of an inverse trig function OF a trig function etc so I should feel OK for the test but I'm still probably going to do bad because im retarded :(

Anyways does anyone know how to do the shadow problem where the guys walking and his shadow grows or something. Pic related just google calculus shadow problem