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If |z-25i| lt= 15. then |"maximum " arg(...

If `|z-25i| lt= 15.` then `|"maximum " arg(z) - "minimum " arg(z)|` equals

A

`2 cos^(-1) (3//5)`

B

`2 cos^(-1) (4//5)`

C

`pi//2 + cos^(-1) (3//5)`

D

`sin^(-1) (3//5) - cos^(-1) (3//5)`

Text Solution

Verified by Experts

The correct Answer is:
B
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MCGROW HILL PUBLICATION-COMPLEX NUMBERS -SOLVED EXAMPLES LEVEL 12
  1. If |z-25i| lt= 15. then |"maximum " arg(z) - "minimum " arg(z)| equals

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