Find the modulus and principal argument of the following complex numbers .
`1-isqrt(3)`

Answer

(i) `2(co s (3pi)/4 + i si n (3pi)/4)`
(ii) `2(co s (pi)/3 + i si n (pi)/3)`
(iii) `2[co s (2pi)/3 - i si n (2pi)/3]`