How to solve a simple Trig cofunction?

*To*: mathgroup at smc.vnet.net*Subject*: [mg50500] How to solve a simple Trig cofunction?*From*: bfeeny at mac.com (Brian Feeny)*Date*: Wed, 8 Sep 2004 05:14:59 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Lets say I have: cos[X+4] = sin[3X+2] What would be the proper way to solve the above, for X, in Mathematica, with the answer in degrees? I did this, but something tells me their has to be a better way: NSolve[Cos[X Degree +4 Degree] = Sin[3 X Degree+2 Degree], X] I mean, I wish i didn't have to enter "Degree"so many times, perhaps their is a simple way to just tell it the whole thing is in Degree. Additionally, is their a way to constrain the above to 90 > X > 0? I tried doing like: NSolve[Cos[X Degree +4 Degree] = Sin[3 X Degree+2 Degree], X /; 90 >X>0] but that obviously is not the right way since that doesn't work. Appreciate all the help. Brian

**Follow-Ups**:**Re: How to solve a simple Trig cofunction?***From:*Andrzej Kozlowski <andrzej@akikoz.net>

**Re: How to solve a simple Trig cofunction?***From:*DrBob <drbob@bigfoot.com>