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![[Post New]](/templates/default/images/icon_minipost_new.gif) 1 Apr 2008 15:48:51 IST
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find da general solution.......
4cos@ cos2@ cos3@=1
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^^^^^^^ |
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1 Apr 2008 15:54:32 IST
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This is a cubic in cos^@
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1 Apr 2008 15:57:46 IST
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@ sandeepramesh
i never understud a word u said
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^^^^^^^ |
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1 Apr 2008 15:59:24 IST
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what did i say that u didnt understand? dont you know the formula for cos2@ and cos3@ ??
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1 Apr 2008 16:02:13 IST
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i know da formulas but what to do next ?
and how did u get 4cos^2@-3 ???
its is suposed to be 4cos^3@ - 3 cos@ rit?
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^^^^^^^ |
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1 Apr 2008 16:03:45 IST
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what is the big deal in it !!!
@ zeeshanp
what is that u do not understand ...
for these type of ques, convert it into a polynomial in cos x..
solve it as u solve a polynomial equation and put conditions to get the ans..
practice makes a man perfect, so u better practice these type of ques. after understanding the fundamentals...
if u are a 12th student, u must know other alternatives...
rate me if useful
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all the best ... |
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1 Apr 2008 16:04:52 IST
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btw, sandeep did a mistake in the formula of cos 3x
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all the best ... |
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1 Apr 2008 16:07:05 IST
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ignorance is bliss arpan :D :D i didnt make a mistake, see properly! Whats the correct formula then?
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1 Apr 2008 16:36:54 IST
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sandeep has written the correct formula only
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"I a universe of atoms.......an atom in the universe" |
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1 Apr 2008 16:45:24 IST
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@zeeshanp
check ur nudge book for solution
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all the best ... |
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1 Apr 2008 22:23:27 IST
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4cos@ cos2@ cos3@=1
2(2cos@ cos3@)cos2@=1
2(cos@+cos2@)cos 2@=1
put values
n solve d equation
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nobody is wrong
even a stopped clock is right twice a day |
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