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P and Q are the points on the ellipse "3...

P and Q are the points on the ellipse "`3x^(2)+4y^(2)=12`" with eccentric angles "`alpha`" and "`beta`" respectively and whose foci are at "S and S" .If "PS" and "QS'" are parallel than "`(tan(alpha)/(2))/(tan(beta)/(2))`" can

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