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[ Last edited by duola1024 on 2012-4-15 at 23:15 ]
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duola1024

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6Â¥: Originally posted by racoon01 at 2012-04-16 16:18:46:
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The result is -Pi/4. The process is complicated to show for you, sorry.
racoon
2Â¥2012-04-16 07:10:25
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3Â¥2012-04-16 09:29:37
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duola1024

ľ³æ (СÓÐÃûÆø)

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2Â¥: Originally posted by racoon01 at 2012-04-16 07:10:25:
The result is -Pi/4. The process is complicated to show for you, sorry.

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