# dx/dt problem

• Dec 7th 2012, 07:45 AM
magico
dx/dt problem
Click on the photo to see it clearly .
Attachment 26124
• Dec 7th 2012, 08:13 AM
HallsofIvy
Re: dx/dt problem
$\frac{x}{4}= tan(\theta)$
• Dec 7th 2012, 08:23 AM
magico
Re: dx/dt problem
Quote:

Originally Posted by HallsofIvy
$\frac{x}{4}= tan(\theta)$

I need the Rate of of theta (theta= ..... rad/sec)
• Dec 7th 2012, 09:16 AM
HallsofIvy
Re: dx/dt problem
"Rate of theta" doesn't make any sense, nor does "theta= rad/sec". You mean you want the rate of change of theta, with respect to time. So differentiate the equation I gave you with respect to t.