anyone wanna give me a hand with my calculus homework

anyone, anyone...its deriving trig equations :H

 

yeah...
since I know how to do that and all..

 

I can help you. From I am the newest superhero in town. Fear not, for I am

"The Integrator"

 

ok, the angle of elevation of the sun is decreasing at a rate of 0.25 rad/h. How fast is the shadow cast by a 400 ft-tall building increasing when the angle of elevation is (<pi>/6)?

i just cant figure out the equation, i know i should use implicit differentation, but i dont know how to set it up... any help would be awesome ash

 

use this equation.

h= d Tan (theta)
differentiate both sides

you know (theta) and d(h)/dt, plug that and solve for d(d)/dt.

 

the derivative of Tan is Secant square, BTW.

 

yeah, ok [i knew the derivative of tan but thanls anyways...]

by d, do you mean the shadow length?

 

yes.

And I edited the equation.

it is actually h = d tan (theta).. use derivative of a product while differentiating right hand side.

 

You people's math doth scare me greatly.

 

oohhhh...ok, well the other way i got ?(3)/3...ill erase it and do it the other...

thanks again...

 

Sorry for the confusion, been a long time since I have done problems of this type. Here's how you do it, this time it is clear.

 

ok, ok...thanks a lot

 

yes, in case you are confused dh/dt= 0 (height is constant)

 

damn ash...you know I don't speak spanish

 

I only know spanish curse words.

 

I would help but I dropped out of calculus last semester. Why? Because I'm senior, and I don't have to take that shit! I had all my credits.

 

er..four ?