1)A street light is at the top of a 16 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a straight path. How fast is the tip of her shadow moving along the ground when she is 30 ft from the base of the pole?
Okay, so here's what I did
need to find ds/dt (shadow)
s=(3/5)x thus (3/5)=ds/dt
That's what my teacher told me to do, but I have no idea why I did that and I STILL don't know how to get the answers. I understand that I probably have to make a smaller triangle where the y is 6 ft, but I just don't know where to go from there.
Use linear approximation, i.e. the tangent line, to approximate as follows: cubed root 63.6
The equation of the tangent line to at f(x) x=64 can be written in the form y=
I don't even understand what the equation is, but shouldn't the answer be close to 4?
I'll probably have some more questions as I work through this homework, but I really think that I'll start to understand it if someone helps me with these few problems. Thanks guys!