Posted by Lereesa on Sunday, August 15, 2010 at 8:50am.
A 5m long ladder rests on a vertical wall. if the bottom of the ladder slides away from the wall at 1m/s, how fast is the angle between the lader and the ground changing when the bottom of the ladder is 3m from the wall?

Calculus  drwls, Sunday, August 15, 2010 at 9:05am
Let X be the distance of the bottom from the wall. Let A be the angle
X = 5 cos A
dX/dt = (dX/dA)*(dA/dt)
= 5 sin A* dA/dt
dA/dt = (1 m/s)(1/5)(1/sinA)
In this case, sin A = 4/5 when X =3 m.
dA/dt will be in radians per second.

Calculus  Anonymous, Sunday, February 27, 2011 at 3:36pm
lalalallala

Calculus  Anonymous, Sunday, February 27, 2011 at 3:37pm
Sa sa sa sa =! sassaslalalaa.blah
Answer This Question
Related Questions
 Calculus 1  Related Rates: A ladder 10 ft long rests against a vertical wall. ...
 Calculus  A ladder 13 ft long rests against a vertical wall. If the bottom of ...
 Calculus 1  A ladder 10ft long rests against a vertical wall. If the bottom on ...
 Calculus  A ladder 10 ft long rests against a vertical wall. If the bottom on ...
 Math  a ladder 10 ft long rests against a vertical wal. if the bottom of the ...
 Math  A ladder 10 ft long rests against a vertical wall. If the bottom of the ...
 Related Rates  A ladder 10 ft long rests against a vertical wall. If the bottom...
 Calculus Ladder Problem  A ladder 20 ft long rests against a vertical wall. Let...
 calculus  A ladder 10 ft long rests against a vertical wall. let θ be the ...
 calculus  A ladder 14 ft long rests against a vertical wall. Let \theta be the ...
More Related Questions