How to use inverse Cosine in Java?

[jjmew]

I need to use the inverse cosine in java. How i can do it? I found a in the Math class the function cos but i cant find cosine inverse. Confucius once said, "I hear and I forget. I see and I remember. I do and I understand."

 

[JavaDude32]

Correct me if I'm wrong, but is there not an arccos method? arc cosine is the official name for the cosine inverse.