My problem is simple. As you might now, tan(45) equals 1. When I use Math.tan(45) though, it outputs 1.6197751905438615.
I don't know if it helps, but this is the code I used:
double angle = Math.tan(45);
Any ideas why it's not working?
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The argument to Math.tan is an angle in radians. (This is mentioned in the Javadoc for that method.) You're giving it an angle in degrees.
To fix this, you can convert the angle from degrees to radians by using Math.toRadians (which multiplies by π/180):
double angle = Math.tan(Math.toRadians(45));
Note that, due to limitations of precision (both of representation and of calculation), this won't be exactly 1; on my machine it comes out to about 0.9999999999999998889776975.
ruakh
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3It is probably better to use `Math.toRadians` for the conversion. – Loris Securo May 11 '19 at 21:23
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@LorisSecuro: Oh, cool! I was not aware of that method. I'll edit. :-) – ruakh May 11 '19 at 21:25
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Thanks for answering the question and thanks for making me look like an Idiot. – NarutoProgrammer May 11 '19 at 21:34
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@Geniass69: Sorry, I wasn't trying to make you look like an idiot. :-/ We've all made mistakes where we assume that an API works the way that we need instead of the way that it does. – ruakh May 11 '19 at 21:51