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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
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2 answers
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.
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.
5 answers