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Reply Forum Index -> Trignometry originally posted here on IIT-JEE / AIEEE community   
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[Post New] 19 Jun 2007 15:18:09 IST
   Subject: Maths
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Harry Potter (0)

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Find the vertices of a triangle formed by 2x+3y=5,3x-y=1 and 4x+y=3.
    
[Post New] 19 Jun 2007 15:26:23 IST
   Subject: Re:trigo
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HIMANSHU JAIN (376)

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sin285 = cos25
& using sin2x + cos2x = 1.
:. whole of the series gets converted till 40.(8 terms used till 40)
ans will be
8+sin245+sin290=9.5
Himanshu Jain
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http://jainhim.blogspot.com/
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[Post New] 19 Jun 2007 19:08:37 IST
   Subject: Re:Maths
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geethu (711)

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take 2eqns each & solve
vertices r (8/11,13/11) ; (2/5,7/5) ; (4/7,5/7)
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