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Topic:   A bit of Trig. help.   (Read 6864 times)

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Gan

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A bit of Trig. help.
« on: March 05, 2009, 07:09:39 PM »
How do you get the rotation of one object orbiting another?

Let's say a moon is orbiting the earth on a 2d plane, what's the equation to get the moon's rotation around the earth?


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Charlo

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Re: A bit of Trig. help.
« Reply #1 on: March 06, 2009, 08:02:38 PM »
I took trig just last year but I can't figure out what you're asking.  What do you mean by rotation?  
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Gan

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Re: A bit of Trig. help.
« Reply #2 on: March 07, 2009, 08:03:49 AM »
Here's a little picture to show what I mean:



Trying to find the degrees of rotation of the small ball at random points around the large ball.

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Gan

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Re: A bit of Trig. help.
« Reply #3 on: March 07, 2009, 08:33:13 AM »
Yes! It works!


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Tireas Dragon

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Re: A bit of Trig. help.
« Reply #4 on: March 08, 2009, 11:36:17 PM »
I still don't understand the question.
If you are trying to find the degrees wouldn't you just use a protractor.
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I must be dreaming (wake up me wake up) How could this have happened. Tireas' cry when he found his computer fallen over in his chair with it's screen shattered.
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