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[Post New]15 Apr 2008 21:37:15 IST
    Subject: Re:Solve this
[Up]
ramkumar_november (1270)

Blazing goIITian

Olaaa!! Perrrfect answer. 230  [290 rates]
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m=\frac{cosA}{cosB}
 
\frac{m+1}{m-1}=\frac{cosA+cosB}{cosA-cosB}
 
 
\frac{m+1}{m-1}=\frac{2cos\bigg(\frac{A+B}{2}\bigg)cos\bigg(\frac{A-B}{2}\bigg)}{2sin\bigg(\frac{B-A}{2}\bigg)sin\bigg(\frac{A+B}{2}\bigg)}
 
\frac{m+1}{m-1}=\frac{cot\bigg(\frac{A+B}{2}\bigg)}{tan\bigg(\frac{B-A}{2}\bigg)}
 
\frac{m+1}{m-1}=K
 
 
 this reply: 7 points  (with 1 Olaaa!! Perrrfect answer.   in 2 votes )   [?]
 
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