Find the value of the foll:

Asked by devanshu_jain | 29th Jul, 2010, 05:55: PM

Expert Answer:

given tanx=baHence  1tanx=abBy property of equal ratios,1-tanx1+tanx=a-ba+ba+ba-b+a-ba+b=1+tanx1-tanx+1-tanx1+tanx                               = 1+tanx+(1-tanx)1-tan2x                               = 21-tan2x                              = 2cosxcos2x-sin2x                              =2cosxcos2x">

Answered by  | 29th Jul, 2010, 10:14: PM

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