Java get cos or sin of angle

Question

I have the folling:

double angle = 0.0;
double rad = Math.toRadians(angle);
double sinIs = Math.sin(rad);
double cosIs = Math.cos(rad);

I would expect the result to be:

rad=0.0
sinIs=0
cosIs=1

However the return Math.toRadians(0.0) will return

rad=2.356194490192345

Can't reproduce. I just tested and `Math.toRadians(0.0) == 0.0`. — Tunaki, Nov 08 '15 at 16:49
Nope: http://ideone.com/lfas6N. Though FWIW, that's equivalent to 135 degrees. — Oliver Charlesworth, Nov 08 '15 at 16:50
it might help http://stackoverflow.com/questions/13951136/how-to-use-math-cos-math-sin — RockAndRoll, Nov 08 '15 at 16:54

score 0 · Accepted Answer · answered Nov 08 '15 at 17:02

0

Seems some issue at your end. I tested this code

public static void main(String a1[]) 
    {
        double angle = 0.0;
        double rad = Math.toRadians(angle);
        double sinIs = Math.sin(rad);
        double cosIs = Math.cos(rad);
        System.out.print("sin-->"+sinIs+"\ncos-->"+cosIs);
    }

Output

sin-->0.0
cos-->1.0

answered Nov 08 '15 at 17:02

RockAndRoll

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You're right, I had a mistake in my code. – octavio Nov 08 '15 at 18:52

Java get cos or sin of angle

1 Answers1