acos ( ) in Java has gone bezierk

Math and Physics Programming

2 comments, last by TheChubu 8 years, 7 months ago

2,776

Author

August 30, 2015 08:11 PM

A bizarre thing

Math.acos(0.24309845) in my java code gave 1.3252374720942488 degrees

but arccos(0.24309845) is really 75.9305 degrees

So why is Math.acos() giving me the wrong value OR maybe what am i doing wrong?

My bet is i'm doing something stupid but can't see it yet

can't help being grumpy...

Just need to let some steam out, so my head doesn't explode...

10,350

August 30, 2015 08:20 PM

It's 1.325 radians, which is the same as 75.930 degrees.

2,776

Author

August 30, 2015 08:47 PM

I knew i was doing something stupid, ....guess i need to get sober first before coding these days

THANKS

can't help being grumpy...

Just need to let some steam out, so my head doesn't explode...

9,484

August 30, 2015 11:07 PM

All Java's Math trigonometry functions use radians. Keep that in mind (or read the docs, thats why they're there).

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