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Mathematica can't solve this equations and stuck my PC

• To: mathgroup at smc.vnet.net
• Subject: [mg120010] Mathematica can't solve this equations and stuck my PC
• From: Norman Polozka <normanmath at gmail.com>
• Date: Tue, 5 Mar 2013 04:15:24 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• Delivered-to: l-mathgroup@wolfram.com
• Delivered-to: mathgroup-newout@smc.vnet.net
• Delivered-to: mathgroup-newsend@smc.vnet.net

Hi All,
   I need to solve below two equations using mathematica. x and y are
variables all other parameters are constants. Below are the two equations I
need to solve and find x and y
in terms of other constants.

(a1*Sin[x-b1] / (y^2+a2*y+a3*y*Cos[x-b1]+c1)^0.5)    +    (a4*Sin[x-b2] /
(y^2+a5*y+a6*y*Cos[x-b2]+c2 )^0.5 )==0
(  2*y+a2+a3*Cos[x-b1]  /  (y^2+a2*y+a3*y*Cos[x-b1]+c1) ^0.5 )    + (2*y +
a5 + a6 * Cos[x-b1]  /  (y^2 + a5*y + a6 * y *Cos[x-b2] + c2)^0.5 )  == -2/
(1+a7*r^(y/a8))