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Basically I have a pointer that starts at a particular reference point on a circle with cartisean coordinates,this pointer then moves around the circumference of the circle with an angle theta, the arc length is known but what I need to find is the change relative to x and y.
I know that the arc length is given by;
[tex]\delta c =r_{c}\theta_{a}[/tex]
where [tex]\delta c, r_{c}, \theta_{a}[/tex] are the arc length, radius of the circle and the angle of the arc respectively.
[tex]\delta c, r_{c}[/tex], and [tex]\theta_{a}[/tex] are known
but what i don't know is how to find the new position of the pointer relative to x and y;
hence I need to find the change in x and the change in y.
I don't really know where to begin so if I could get some pointers rather than the answer then that would great.
Thanks for your time
N
I know that the arc length is given by;
[tex]\delta c =r_{c}\theta_{a}[/tex]
where [tex]\delta c, r_{c}, \theta_{a}[/tex] are the arc length, radius of the circle and the angle of the arc respectively.
[tex]\delta c, r_{c}[/tex], and [tex]\theta_{a}[/tex] are known
but what i don't know is how to find the new position of the pointer relative to x and y;
hence I need to find the change in x and the change in y.
I don't really know where to begin so if I could get some pointers rather than the answer then that would great.
Thanks for your time
N
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