Solve and Trig functions

*To*: mathgroup at smc.vnet.net*Subject*: [mg19295] Solve and Trig functions*From*: "Kevin J. McCann" <kevin.mccann at jhuapl.edu>*Date*: Sat, 14 Aug 1999 01:45:18 -0400*Sender*: owner-wri-mathgroup at wolfram.com

If I have the following two equations: eq1 = a1 + b1 == Sin[fi]; eq2 = a2 + b2 == Cos[fi]; It is clear that Tan[fi] == (a1+b1)/(a2+b2) but how do I get Mathematica to recoginize this? This problem is trivial, but with more complicated expressions, the answer may not be immediately obvious. Thanks, Kevin Kevin J. McCann Johns Hopkins University APL