I am completely lost on the entire subject of trigonometric functions. I missed majority of class when we discussed it first, and I have no idea what I'm doing when it comes to inverses and domains... Help?

Question

anonymous · Answer

...awaiting a question needing assistance.

anonymous · Answer

best to read about it in a text or ask a specific question here.
here is a decent cheat sheet that might help

anonymous · Answer

Can you explain how to determine the period of a function?

anonymous · Answer

it is hard (impossible) to write a complete explanation here.  try a problem, and then if you are stuck ask a specific question.

anonymous · Answer

Period = time of complete cycle

anonymous · Answer

if you have a graph  you can see the period from the graph
the period of sine and cosine is $2\pi$ for tangent it is $\pi$ and if you  have 
$$\sin(bx)$$ it is $\frac{2\pi}{b}$

anonymous · Answer

the function would need to be a repeating one, like a waveform

anonymous · Answer

Okay, so a period is similar to a wavelength?

anonymous · Answer

Not per se, Sine wave goes above zero, then below, then reaches zero again
from start to finish, that is the period

anonymous · Answer

wavelength is sort of different

anonymous · Answer

Oh, okay, that's very helpful. Also, how do you determine what the domain will be?

anonymous · Answer

generally, a repeating wave is measured from +peak to +peak

anonymous · Answer

here is a graph of $\sin(2x)$ you can see that the period is $\pi$ http://www.wolframalpha.com/input/?i=sin%282x%29

anonymous · Answer

Well, anyway, thank you all. You're all very helpful :-)

anonymous · Answer

You're welcome!

australopithecus · Answer

Here is an old note from my calc highschool class that explains the parts of a trig function so you can graph it. Don't know if it helpful but yeah