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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: COMPLEX NUMBERS
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[Post New]18 Feb 2008 11:15:03 IST
    Subject: COMPLEX NUMBERS
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satyabharadwaja (22)

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z=ilog(2-root3),then cosz=
satyabharadwaja
    
[Post New]18 Feb 2008 22:42:42 IST
    Subject: Re:COMPLEX NUMBERS
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sboosy (2970)

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cosz= (eiz+ei(-z))/2
iz= i*i log(2-3)= -log(2-3)
so cosz= ((1/(2-3))+(2-3)))/2
= (2+3+2-3)/2
=2
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