Question

A ladder is 25 feet long and leaning against a vertical wall at 3 ft/sec. Suppose we wish to determine how fast the top of the ladder is sliding down the wall when the bottom is 15 ft from the wall

Thank you!

Answer 1

Fay/Grace --

You need to show some work on what you've posted. Otherwise, the math tutors will think you just want to copy the answers down.

Answer 2

use right angle formula
c^2=a^2+b^2
then take the derivative..with respect to time..
2c dc/dt=2ada/dt + 2b db/dt
you know dc/dt, da/dt, solve for db/dt.