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If |z- 25i| le 15, then Maximum arg(z)- ...

If `|z- 25i| le 15`, then Maximum arg(z)- Minimum arg(z) is equal to
(arg z is the principal value of argument of z)

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))`

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