问题标题：
EnglishmathsproblemsaboutComplexnumberExpressthefollwingcomplexnumbersinpolarform(a)2(b)-4(c)3i(d)-2iIsthereanyonecangivemedetailanswersThanksforhelpingmeloveu
问题描述：
EnglishmathsproblemsaboutComplexnumber
Expressthefollwingcomplexnumbersinpolarform
(a)2(b)-4(c)3i(d)-2i
Isthereanyonecangivemedetailanswers
Thanksforhelpingme
loveu
陈林才回答：
(a)2=2+0*i=2*cos0°+2*sin0°ipolarform:2∠0°(b)-4=4*cos180°+4*sin180°ipolarform:4∠180°(c)3=|3i|sina,0=|3i|cosa,a=90°,|3i|=3polarform:3∠90°(d)-2=|-2i|sina,0=|-2i|cosa,a=-90°,|-2i|=2p...
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