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04-08-2012, 12:17 PM
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#13
5 -
^2 + ^2 + ^2 = 1 - 2
+ + = 180
= - ( + ) = - [ - )
^2 = ^2*^2 + ^2*^2 - 2* *
= ^ ^2 + (1 - ^2)(1 - ^) - 2* *
= 2 ^2 ^2 - ^2 - ^2 + 1 - 2* *
= 2 [ - ] - ^2 - ^2 + 1
= 2 *( + ) - ^2 - ^2 + 1
= - 2 - ^2 - ^2 + 1
^2 + ^2 + ^2 =
= - 2 - ^2 - ^2 + 1 + ^2 + ^2
= 1 - 2
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04-08-2012, 12:18 PM
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#14
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04-08-2012, 12:19 PM
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#15
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04-08-2012, 12:20 PM
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#16
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04-08-2012, 12:21 PM
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#17
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04-08-2012, 12:21 PM
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#18
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04-08-2012, 12:21 PM
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#19
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04-08-2012, 12:22 PM
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#20
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04-08-2012, 12:23 PM
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#21
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04-08-2012, 12:23 PM
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#22
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04-08-2012, 12:24 PM
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#23
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04-08-2012, 12:25 PM
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#24
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