(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Prove that:

[tex]sin^{2}(\theta+\alpha)+sin^{2}(\theta+\beta)-2sin(\theta+\alpha).sin(\theta+\beta).cos(\alpha-\beta)=sin^{2}(\alpha-\beta)[/tex]

3. The attempt at a solution

After simplifying the LSH

by simply applying formula for sin(a+b) or cos(a+b) does give me this result but th method is too lengthy. Is there any other way out???????

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# Homework Help: Simplification (Trigo Based)

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