Re: Trig identity for linear combination of sines
- To: mathgroup at smc.vnet.net
- Subject: [mg131507] Re: Trig identity for linear combination of sines
- From: orenpedatzur at gmail.com
- Date: Thu, 15 Aug 2013 01:20:46 -0400 (EDT)
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On Monday, June 15, 2009 2:07:21 AM UTC+3, Chelly wrote: > Hi: > > I have a function which is a linear combination of sines, of the form > > y = a*sin(x+q) + b*sin(x+r) + c*sin(x+t) > > and I am looking for a trignometric identity that would reduce the above to the form > > y = A*sin(x+Z) > > I would also like to find out how to implement this rule in Mathematica. > > Thanks > Chelly Hi Chelly This kind of linear combination of sines is covered in wikipedia article on trigonometric identities: http://en.wikipedia.org/wiki/List_of_trigonometric_identities I would also like to know how to implement this in mathematica. bye! Oren P