Question

A ladder 10ft long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1 ft/s, how fast is the top of the ladder sliding down the wall when the bottom of the ladder is 6ft from the wall?

Answer 1

Hi.

Answer 2

Hello

Answer 3

how good are ur derivatives skillz?

Answer 4

kind of good, but not a lot.

Answer 5

we would need dat image

Answer 6

ah, i see

Answer 7

we need an equation to find y since our x is 6

Answer 8

do u know d equation?

Answer 9

no

Answer 10

okay we would use pythgoras

Answer 11

y^2+x^2=10^2

Answer 12

I see. The sides of the triangle are basically the x and y, so that how you got the equation

Answer 13

yep

Answer 14

So this is the main function

Answer 15

yep

Answer 16

so do u have a value for y?

Answer 17

we will have to find the derivative and then put x = 6 in it to find the answer?

Answer 18

wait before we do dat we need to look for y using d normal Pythagoras

Answer 19

can I take a random Y?

Answer 20

no u need to solve for it

Answer 21

i see
Get it to be Y =.....