A ladder 10 meter long is leaning against a wall. If the top of the ladder is sliding down the wall at 4m/s, how fast is the angle between the top of the ladder and the wall changing when the foot of the ladder is 6 meter away from the wall?

Question

anonymous · Answer

I do not know how to set this up.

yttrium · Answer

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This is what the set-up may look like.

anonymous · Answer

yes, i got that.

anonymous · Answer

the wall it 8 ft tall?

anonymous · Answer

but i don't know what to do afterwards

sheraz12345 · Answer

Maybe we have to apply phenomena of related rates here