Problem With Radtodeg() Function, *Solved* Options

[Mak6nd]

This problem has been solved now thanks.

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Hi, I've just tryed out the radtodeg() function and I've noticed that it isn't working properly for me.

sin(x), cos(x) and tan(x) all return the answer in radians. So I tested them and set my calculator mode to radians and tried each of them. Game maker returned the same numbers as my calculator returned. However I want the answer to be in degrees so I used the radtodeg() function.

radtodeg(sin(55)) on Game maker returned -57.2817519800

I set my calculator mode to degrees and tried sin(55), the answer I got was 0.819152044.

I have the same problem when using the cos and tan functions. I'm sure sin, cos and tan all work fine (give correct answer in radians) but it's just radtodeg() that doesn't work.

Please help!

Thanks.



This post has been edited by Mak6nd: Nov 6 2009, 08:10 PM

[ramses12]

Don't you know that sin() doesn't return an angle?!
It has an angle as the argument, which has to be altered by degtorag().

Edit: sin(degtorad(angle)); has a valid value. What are you trying to do anyway?

This post has been edited by ramses12: Nov 6 2009, 07:07 PM

[jabelar]

Hi, I've just tryed out the radtodeg() function and I've noticed that it isn't working properly for me.

sin(x), cos(x) and tan(x) all return the answer in radians. So I tested them and set my calculator mode to radians and tried each of them. Game maker returned the same numbers as my calculator returned. However I want the answer to be in degrees so I used the radtodeg() function.

radtodeg(sin(55)) on Game maker returned -57.2817519800

I set my calculator mode to degrees and tried sin(55), the answer I got was 0.819152044.

I have the same problem when using the cos and tan functions. I'm sure sin, cos and tan all work fine (give correct answer in radians) but it's just radtodeg() that doesn't work.

Please help!

Thanks.

You're using radtodeg() in the wrong place. 55 is in degrees, and you need to convert that to radians. In game maker you should use:

CODE

sin(degtorad(55))

[ramses12]

And if you need an angle returned, you should probably know what trigonometrical functions like arcsin(), arccos() and arctan() are for.

[Mak6nd]

Ramses, I do know trigonometry and how to find angles but I was just testing for something I plan to make with Game maker.

I've tried out sin(degtorad(55)), and it works so thanks both of you for your help.

If I wanted to do the inverse of sine then I could use arcsin(), but could someone please tell me how to do so?

EDIT: I've figured it out now.

Thanks.

This post has been edited by Mak6nd: Nov 6 2009, 08:08 PM

[ramses12]

Ramses, I do know trigonometry and how to find angles but I was just testing for something I plan to make with Game maker.

I've tried out sin(degtorad(55)), and it works so thanks both of you for your help.

Well ok didn't say you don't know that, just trying to clarify things for novice users who may read this.