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Q.

If the complex numbers z for which arg3z63i2z86i=π4 and |z3+i|=3, are k45+i1+25 and k+45+i125 then k must be equal to

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answer is 4.

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Detailed Solution

tan1y1x2tan1y3x4=tanπ4y1x2y3x4=1+y1x2y3x4 i.e. 2x2y2=x2+y26x4y+11x2+y28x2y+13=0.(1)(x3)2+(y+1)2=32
 and x2+y26x+2y+1=0---(2)
 (1)-(2) gives 2x+4y=12

substituting k45,1+25 in 2x+4y=12k=4

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If the complex numbers z for which arg⁡3z−6−3i2z−8−6i=π4 and |z−3+i|=3, are k−45+i1+25 and k+45+i1−25 then k must be equal to