If $\sqrt 3 + i = (a + ib)(c + id)$, then ${\tan ^{ - 1}}\left( {\frac{b}{a}} \right) + $ ${\tan ^{ - 1}}\left( {\frac{d}{c}} \right)$ has the value
$\frac{\pi }{3} + 2n\pi ,n \in I$
$n\pi + \frac{\pi }{6},n \in I$
$n\pi - \frac{\pi }{3},n \in I$
$2n\pi - \frac{\pi }{3},n \in I$
Let $A =\left\{\theta \in(0,2 \pi): \frac{1+2 i \sin \theta}{1- i \sin \theta}\right.$ is purely imaginary $\}$. Then the sum of the elements in $A$ is
If $z_1 , z_2$ and $z_3, z_4$ are $2$ pairs of complex conjugate numbers, then $\arg \left( {\frac{{{z_1}}}{{{z_4}}}} \right) + \arg \left( {\frac{{{z_2}}}{{{z_3}}}} \right)$ equals
Find the number of non-zero integral solutions of the equation $|1-i|^{x}=2^{x}$
If $arg\, z < 0$ then $arg\, (-z)\, -arg(z)$ is equal to
Find the real numbers $x$ and $y$ if $(x-i y)(3+5 i)$ is the conjugate of $-6-24 i$