- #1
sonic25
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Homework Statement
A spotlight on the ground shines on a wall 14m away. A person of height 2 m walks toward the wall on a direct path between the spotlight and the wall at a rate of 5/3m/s. How fast is the height of the shadow on the wall changing when the person is 4m from the wall?
Homework Equations
Not sure? I think implicit differentiation needs to be employed though.
The Attempt at a Solution
I tried to construct a right-angled triangle to use as a diagram to represent the situation, however this didn't really help as I cannot identify which variables I need to use to answer the problem.
Thanks in advance for any help:)