The argument of `(1-isqrt(3))/(1+isqrt(3))` is a. `60^@` b. `120^@` c. `210^@` d. `240^@`

Explanation

`frac{1-i sqrt{3}}{1+i sqrt{3}}`


Rationalising the denominator,



`frac{1-i sqrt{3}}{1+i sqrt{3}} times frac{1-i sqrt{3}}{1-i sqrt{3}} `

`=frac{1+3 i^{2}-2 sqrt{3} i}{1-3 i^{2}} `

`=frac{-2-2 sqrt{3} i}{4}( i^{2}=-1) `

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