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[Post New]8 Feb 2008 10:29:41 IST
    Subject: Re:Trig Eqn
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elastiboysai (2327)

Blazing goIITian

Olaaa!! Perrrfect answer. 421  [532 rates]
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i think 2 solns 0, pi/2
 
sin^7x<= sin^2x
cos^7x<=cos^2x
addin
sin7x+cos7x<= 1
but here gvn equality,
so sin^7x=sin^2x and cos^7x= cos^2x
so sinx=0/1..
x=0/pi/2
 this reply: 17 points  (with 3 Olaaa!! Perrrfect answer.   in 4 votes )   [?]
 
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