已知(cosA+isinA)2=-12+32i,其中i是虚数单位,A是三角形的内角,则A等于()A.π6B.π3C.2π3D.5π6-数学

题目简介

已知(cosA+isinA)2=-12+32i,其中i是虚数单位,A是三角形的内角,则A等于()A.π6B.π3C.2π3D.5π6-数学

题目详情

已知http://www.mofangge.com/html/qDetail/02/g0/201401/data:image/png;base64,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,其中i是虚数单位,A是三角形的内角,则A等于(  )
A.B.C.D.
题型:单选题难度:偏易来源:不详

答案

B

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