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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Mar 2008 13:49:41 IST
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the set of values of
tan3x - tan2x
____________ = 1
1 + tan3x tan2x
pi/4
pi/4 + 1
none of these
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edit- Anchit and rohith are right.......sorry
tan 2x is not defined at x=pi/4....hence C
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28 Mar 2008 14:11:54 IST
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it will be A)
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28 Mar 2008 14:16:19 IST
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any other solution????
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28 Mar 2008 15:17:38 IST
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anand provided u with best soln.. there is no other soln. which will give less effort then that method..
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28 Mar 2008 15:23:05 IST
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i think it might be null
because tan 2x = infinity
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Impossible To be Impossible is Impossible |
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28 Mar 2008 15:26:19 IST
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it will ba a since no information regarding x is given cant say tan2x is infinity
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28 Mar 2008 15:28:20 IST
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when x is pi/4
so what is tan 2x ??
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Impossible To be Impossible is Impossible |
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28 Mar 2008 15:35:13 IST
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now,im myself confused as it is giving indeterminate form if putting tan 2x=infinity,
i was wrong ok, but whats corrrect c or d anyone can be correct ,
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28 Mar 2008 17:37:14 IST
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infact anchit is right, it is null set :)
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28 Mar 2008 18:17:43 IST
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u cant put the equation of tan(A+B) or (A-B) in case of trigonometric equations....
so yes the answer given is wrong....
ans must be phi.....
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28 Mar 2008 19:08:08 IST
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tan( A - B) = tanA - tanB ------------------ 1+tanAtanB this is true only when A  n  + /2 so we tan x = 1 is not a sol. may be the ans is c
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