http://i952.photobucket.com/albums/a...g/P1240011.jpg

I have solved for part (a) and part (b), including showing OA, problem lies in showing OM... would appreciate some help for showing OM=$\displaystyle 2cos\theta+5sin\theta$

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- Jan 23rd 2010, 06:25 PMPunchShowing(2)
http://i952.photobucket.com/albums/a...g/P1240011.jpg

I have solved for part (a) and part (b), including showing OA, problem lies in showing OM... would appreciate some help for showing OM=$\displaystyle 2cos\theta+5sin\theta$ - Jan 23rd 2010, 07:19 PMJhevon
- Jan 23rd 2010, 07:34 PMPunch
Thanks!!!

http://i952.photobucket.com/albums/a...g/P1240011.jpg

For OA, its far more simple! Draw a line perpendicular to the x-axis from the point (5,2). Let point on perpendicular line on x-axis be X.

So

$\displaystyle OX=5$.

$\displaystyle tan\theta= \frac{2}{XA}$

$\displaystyle cot\theta=\frac{XA}{2}$

$\displaystyle XA=2cot\theta$

$\displaystyle OA = 5+2cot\theta$ - Jan 23rd 2010, 07:48 PMJhevon