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How to get the function ?
*To*: mathgroup at smc.vnet.net
*Subject*: [mg89330] How to get the function ?
*From*: Joe <Joe.Varghese.John at gmail.com>
*Date*: Fri, 6 Jun 2008 06:45:33 -0400 (EDT)
Hi All,
I am new to this group. Hope this is the right one.
Assume a Circle with its bottom most point (-veY-axis from the center
meeting with circle) as the referance point. That point is x=0, Y=0.
I know the X and Y values of a point on the circle from the referance
point. Let that be (X1, Y1).
(Lets that point makes an angle of approx 30=B0 at the center with
respect to Y axis.)
My objective is to find the x and y values of a point which make a
specific angle, say 60=B0.
-----------------
Assume Theta1 is the Angle of (X1, Y1) and (0, 0) at the Center.
Assume Theta2 is the Angle of (X2, Y2) and (0, 0) at the Center.
Assume R is the Radius
Known values > X1, Y1, Theta2
to find > Theta1, R
Result needed > X2, Y2
------------------
X1 = R * Sin(Theta1)
R - Y1 = R * Cos(Theta1)
Solving this simutanious eq gives you R.
X2 = R * Sin(Theta2)
Y2 = R - ( R * Cos(Theta2) )
--------------------
Now the Qn is to rearrange the first two eq, so that I can find R
directly..
R = Fn( X1, Y1 )
what would be the function..............
Thanka a lot...
Joe.
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