Opposites of Sine Cosine and Tangent

Alright I'm making a text based calculator. As of right now it does addition, subtraction, multiplication, division, square roots, squares, sine, cosine, and tangent. I am wondering if there is the opposite of the sine, cosine, and tangent functions, like on a calculator (the ones with the -1 next to them). I've looked though Math (Java 2 Platform SE v1.4.2), but all it has is the regular sine cosine and tangent functions. Are there opposites of these built into Java or am I out of luck?

Re: Opposites of Sine Cosine and Tangent

The math class has the asin, acos, atan methods that perform the arc-values of the corresponding method.

Re: Opposites of Sine Cosine and Tangent

Oh, I was confused about what it meant by arc. Thanks!