A spotlight on the ground shines on a wall 14m away. If a dog, 0.5m tall, runs from the spotlight towars the building at a speed of 1 m/s, how fast is the height of the animal's shadow on the building decreasing when the dog is 5 meters from the building?
Wrt = with respect to
Pythagoreon theorem, implicit differentiation, you name it.
The Attempt at a Solution
Knowing that Dc/dt is canine wrt time is 1 m/s and i am trying to find dh/dt 'h' for height wrt time
and im stuck....
14^2 + wall^2 = Hyp^2