Originally Posted by

**Impalord** Hello, this is my first post on the forums. I had a question about Sine, Cosine, and Tangent functions. I just started Trigonometry over the summer, so the class moves a little fast. I was hoping if I could get something cleared up from you guys.

Basically, I know how to use these functions, as in I know the basic rules when using them to find angles.

For instance:

Sin x = Opposite/hypotenuse

Cos x = Adjacent/hypotenuse

And so on.

But what does Sine actually mean? I guess what I'm asking, is how would I find the Sine of an angle without a calculator with a sine function? The cosine? I just want to know what's happening when you take the Sine,Cosine, or tangent of something.

Sorry if the questions are elementary.

Thank you,

-Impa