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![[Post New]](/templates/default/images/icon_minipost_new.gif) 15 Mar 2007 14:01:45 IST
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sin2x+cos2x=? 2cosx/2cosecx=?
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16 Mar 2007 05:24:13 IST
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sin2x + cos2x = 1
2cosx/2cosecx = sinxcosx
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Bipin Kumar Dubey
Chemical Dept.
IIT Kharagpur
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16 Mar 2007 09:06:41 IST
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which is 1/2 sin2x
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Life Ka fundaa hai
Jiyo aur jino do |
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16 Mar 2007 09:54:58 IST
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taruntanuj,
2nd one is 1/2 sin2x
bcoz
1/2 . 2 sinx .cos x = 1/2 sin2x
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DO NOT FOLLOW MY WAY.
IT'S TOO DANGER. |
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16 Mar 2007 09:55:21 IST
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rate me quickly
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DO NOT FOLLOW MY WAY.
IT'S TOO DANGER. |
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16 Mar 2007 16:40:53 IST
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cosec (x/2)
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sachin |
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16 Mar 2007 17:02:51 IST
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woah!!! those were really tough ones!!
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--
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16 Mar 2007 17:45:35 IST
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YES SUBS
YOU ARE RIGHT THEY ARE SILLY QUESTIONS
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16 Mar 2007 18:46:56 IST
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sin^2x+cos^2x=1.
your question is not clear.
there are two possibilities
a)[2cosx/2].[cosecx]
b)(2cosx)/(2cosecx)
solutions
a)(2cosx/2).(1/'sinx)
=(2cosx/2).[1/2(sinx/2.)(cosx/2)]
=1/(sinx/2)
=cosec(x/2)
b)(2cosx)/(2cosecx)
=cosx.sinx
hope you have understood properly.
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vision for iit never ends........ |
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