1.

If z is a comple numbersuch that-(pi)/(2) lt "arg z" le (pi)/(2), thenwhich of the followinginequalities is ture ?

Answer»

`|z - BARZ| LE |z| (arg z - arg barz)`
`|z-barz| GE |z| (argz -arg barz)`
`|z -bar z| LT (arg z - arg barz)`
NONE of these

Solution :
`|z-barz|=AB`
while `|z|(argz-arg barz)=" Arc "AB`
`therefore"" |z-barz\|le|z|("arg "z-"arg "barz)`


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