Programming challenge - Math Edition

[SilicateWielder]

So, I have a challenge for you guys, what can you make using the following equation?

 

X = (a) cos * c - (a) sin * c

Y= (a) sin * c + (a) cos * c

 

only the X and Y variables have to match to their corresponding variable as written above in your program. all non-variables must match.

 

X = (5)cos * 10 - (5)sin * 10

Y = (3)sin * 10 - (3)cos * 10

 

Preffered languages are, Python, Javascript, or Scratch; this is for the sake of not everyone being able to code or read C#/C++ and Java. But if you really want you can program in other languages

[Nineshadow]

I don't get it.

[Nuluvius]

I don't get it.

 

He's trying to obfuscate getting us to do his homework for him.

[Nineshadow]

He's trying to obfuscate getting us to do his homework for him.

But I don't get what I'm supposed to do.

[madknight3]

But I don't get what I'm supposed to do.

 

I'm not sure either. I got the impression that you need to draw some kind of picture by using the points provided through the listed equations. No idea if I'm right though.

[SilicateWielder]

I'm not sure either. I got the impression that you need to draw some kind of picture by using the points provided through the listed equations. No idea if I'm right though.

 

You're on the right track.

[Azgoth 2]

I can plot a straight line with those, because Y = X.

 

I can also not actually plot anything with those exact expressions, because I'm going to be pedantic and point out that (a)sin*c is not, as written, valid math.

[Sauron]

those are polar equations for a diagram on R^2 of some sort.

 

What confuses me is that written like that, it's pretty much x=y, which is a straight line on the z axis?

[SilicateWielder]

those are polar equations for a diagram on R^2 of some sort.

 

What confuses me is that written like that, it's pretty much x=y, which is a straight line on the z axis?

 

 

I can plot the origin if a=0 and c in R

 

 

I can plot a straight line with those, because Y = X.

 

I can also not actually plot anything with those exact expressions, because I'm going to be pedantic and point out that (a)sin*c is not, as written, valid math.

To the above, equation had a typo in it, it is now fixed.

 

@Azgoth 2, I haven't taken trig classes so I wouldn't know how to properly type out equations using sin and cos outside of code

[madknight3]

I haven't taken trig classes so I wouldn't know how to properly type out equations using sin and cos outside of code

 

Given that sin/cos are functions, I think it's more appropriate to write them like this. It's not completely clear whether it's the 'a' or 'c' that is used by sin/cos, but given the equations, it's not that important because it would work out the same.

X = a * cos(c) - a * sin(c)Y = a * sin(c) + a * cos(c)// orX = c * cos(a) - c * sin(a)Y = c * sin(a) + c * cos(a)

[SteveGrabowski0]

It's an ellipse. If you take x(t) = a cos(t) - a sin(t) and y(t) = b sin(t) + b cos(t), then you have x^2/(2a^2) + y^2/(2b^2) = 1.

[Azgoth 2]

To the above, equation had a typo in it, it is now fixed.

 

@Azgoth 2, I haven't taken trig classes so I wouldn't know how to properly type out equations using sin and cos outside of code

Heh, well, it's not a big deal.  It's still clear what the equations are supposed to be, but just for the record, since sin and cos are functions, the standard way would be to write a*sin© and a*cos©.