已知向量m=(cosa,sina)和n=(根号2-sina,cosa)a属于(派,2派)且|m+n|=(8根2)/5,求cos(a/2+pai/8)
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已知向量m=(cosa,sina)和n=(根号2-sina,cosa)a属于(派,2派)且|m+n|=(8根2)/5,求cos(a/2+pai/8)
已知向量m=(cosa,sina)和n=(根号2-sina,cosa)a属于(派,2派)且|m+n|=(8根2)/5,求cos(a/2+pai/8)
已知向量m=(cosa,sina)和n=(根号2-sina,cosa)a属于(派,2派)且|m+n|=(8根2)/5,求cos(a/2+pai/8)
如图
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Posted by Lucky Lang, SRES?, Davenport, Iowa Real Estate on 08/11/2010 01:00 AM Comments (0) Jackie Evancho in the ActiveRain Channel jackie evancho,coach handbags, singing sensation,mbt walking shoes, americas got talent, susan boyle, charlotte church, davenport iowa real estate, lucky lang Originally posted at: Davenport Iowa Real Estate: Jackie Evancho - A Child Star with a Bright Future! Post is included in group: Posts to Localism
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