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## Homework Statement

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

## Homework Equations

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....

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14^2 + wall^2 = Hyp^2