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**tony123****Member**- Registered: 2007-08-03
- Posts: 189

find acute angle x such that

*Last edited by tony123 (2008-02-26 04:25:20)*

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**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

*Last edited by JaneFairfax (2008-02-27 08:21:44)*

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**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Well, I didnt find the solution the following way but now that Ive found the solution, it finally hit me that I could have done it the following way instead of the messy method I used.

The roots of the complex equation

areThe sum of the roots is equal to 0. QED.

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**tony123****Member**- Registered: 2007-08-03
- Posts: 189

yes jane the only solution x=2pi/7

x acute

but you can get the solution by multiplying by 2sinx/2

thank you

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**gAr****Member**- Registered: 2011-01-09
- Posts: 3,462

Hi tony123,

The way you wanted:

"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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