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Mathematics 11 Online
OpenStudy (anonymous):

if z be a complex number satisfying 4arg(z-5i)=2arg(z+3)=cos^-1(-1) then 1.z=2i-3 2.z lies on x+y+1=0 3.modz=radius of x^2+y^2+2x-4y-8=o which is true

OpenStudy (anonymous):

1.

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