find the modulus and argument of

(a)6+j

(b)-5-9j

do i sub into

$\displaystyle \sqrt{a^2+b^2}$

and

$\displaystyle tan^{-1}\frac{a}{b}$

many thanks

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- Feb 20th 2010, 09:36 AMdecoy808modulus and argument
find the modulus and argument of

(a)6+j

(b)-5-9j

do i sub into

$\displaystyle \sqrt{a^2+b^2}$

and

$\displaystyle tan^{-1}\frac{a}{b}$

many thanks - Feb 20th 2010, 09:40 AMe^(i*pi)