Ashwin Muralidharan IIT Madras
Last Activity: 13 Years ago
Hi Menka,
Sub y=root(3)x in the eqn, and form a cubic in x for which say x1,x2,x3 are the roots.
Now OA = √(x1^2 + y1^2) = 2x1 -------- (as y1=root(3)x1)
So OA.OB.OC = 8x1x2x3.....
From the cubic in x, find x1x2x3 using product of roots, and you'll get the value of OA.OB.OC from 8x1x2x3.
Regards,
Ashwin (IIT Madras).