I Sum-difference trig identity help

  • Thread starter volican
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Hi,

I am working on an engineering problem and I have an equation which takes the following form:

x = (A * cosα * sinθ) + (B * sinα * cosθ)

Can this be further simplified? It almost looks like one of the sum-difference formulas you find in tables of trigonometric identities. I'm not to sure about the different coeffieints though. Any help would be much apreciated.
 
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##2 \cos \alpha \sin \theta = \sin(\alpha + \theta) + \sin(-\alpha+\theta)## could be interesting. Not sure if the result is "simplified", but it is at least a different compact expression.
 

mathman

Science Advisor
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If |A|=|B|, he expression can be simplified.
 
33,468
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That condition is not necessary.
 

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