Using Math.cos() to find cosine of angle in degrees

Question

I want to give the result the Math.cos() method in java in degrees.I have tried methods like converting from radians to degrees. But I discovered that any number I pass into the Math.cos() method is being treated as radians,irrespective of whether I convert.Please I can I make it give me the result in degrees.Thanks.

score 11 · Answer 1 · answered Jul 22 '13 at 06:42

11

use Math.toRadians to convert your degrees to radians to pass to Math.cos for example

double blah = Math.cos(Math.toRadians(50));

I think that is what you are asking. There are quite a lot of similar questions here.

answered Jul 22 '13 at 06:42

azp74

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Maroun · Answer 2 · 2013-07-22T06:43:59.343

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You can use Math.toDegrees()/Math.toRadians()

Converts an angle measured in radians to an approximately equivalent angle measured in degrees/radians.

Note that public static double cos(double a) expect the parameter in radians:

a - an angle, in radians.

edited Jul 22 '13 at 06:43

answered Jul 22 '13 at 06:38

Maroun

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score 2 · Accepted Answer · answered Jul 22 '13 at 06:41

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I discovered that any number I pass into the Math.cos() method is being treated as radians, irrespective of whether I convert.

The discovery is quite correct, and is precisely why you convert. Once you've done the conversion, you pass the resultant angle (which is in radians) to Math.cos(), and everyone is happy.

answered Jul 22 '13 at 06:41

NPE

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Use Math.toRadians to convert – Janac Meena Sep 10 '19 at 14:06

Using Math.cos() to find cosine of angle in degrees

3 Answers3