For a Cosine function with amplitude =0.75 and period =10 , what is y(4) ?

Question

For a Cosine function with amplitude  =0.75 and period =10 , what is y(4) ?

anonymous · Answer

$$y (t)= Acos(\omega t)$$

where A = amplitude
$$\omega = angular.frequency= \frac{2 \pi }{T}, T = time.period$$

anonymous · Answer

The answer is 0.601

anonymous · Answer

are you asking me or telling me? :P

anonymous · Answer

Sorry. I am telling you what I found the answer to be. Thanks so much for your help!

anonymous · Answer

The answer actually depends on the initial conditions!.. that is y(0)

anonymous · Answer

That is the answer I submitted and got credit for. there was only one correct answer, which was 0.601. it was a tough problem. once again, I really appreciate for help! Have a great day.

anonymous · Answer

good to hear that.. your welcome :) you should close this question now.. to let people know that you are satisfied with the answer!

anonymous · Answer

I am new to this. How do I do that? and How do I change my username?

anonymous · Answer

you have an option.. press CLOSE question!

anonymous · Answer

okay. i think I was able to close it.

anonymous · Answer

yes correct!!

anonymous · Answer

how do i change my username

anonymous · Answer

or can you direct me to the right person that can help me with changing my username. thanks