how do i implement the cosine trig function in java?
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cosine in java
how do i implement the cosine trig function in java?
Re: cosine in java
Do you need to make an implementation, or do you just need a cosine function?
If you just need cosine for somthing else, then check the Math class. It contains a cos method.
Re: cosine in java
Unless you intend to draw the graph using Graphics2D, the math class contains the sine and cosine functions. They do however only work with radians, so you'll need a converted variable if you intend to have degrees as input.
Example of the cosine:
edit: changed from int to doubledouble x = Math.cos(Math.PI/6);
API:
Math (Java 2 Platform SE v1.4.2)
Hope that helps.
Last edited by olemagro; January 22nd, 2010 at 09:37 AM.
Re: cosine in java
casting to integers for cosine/sine is a bad idea. You'll almost always get zero because of truncation.
olemagro (January 22nd, 2010)
Re: cosine in java
Ah, didn't know that. Noted to self!
Edit: Come to think of it, I knew it but didn't consider the fact that int doesn't allow decimals which is crucial in most sine/cosine functions.
Last edited by olemagro; January 22nd, 2010 at 05:12 PM.
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