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Trignometry

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2 Oct 2009 17:16:03 IST
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If 3SinA+cosA=5, then 5SinA-3cosA=?
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If 3SinA+cosA=5, then 5SinA-3cosA=?


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NugoRama's Avatar

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Joined: 11 Mar 2009
Posts: 5517
2 Oct 2009 17:22:19 IST
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 3SinA+cosA CAN NEVER BE EQUAL TO 5

its value lies b/w -root10 to root10.

hence, wron question.

Sagar Saxena's Avatar

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Joined: 8 Oct 2008
Posts: 7221
7 Oct 2009 19:17:24 IST
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hello dear

 

the maximum and minimum value of ::

3SinA+cosA   =  [-101/2,101/2]

it cant be 5

5SinA-3cosA=?

hence for the above expression::

[-341/2,+341/2]

 

Achiever...2011's Avatar

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Joined: 30 Mar 2009
Posts: 104
11 Oct 2009 20:19:44 IST
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....

 




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