4-1.Complex numbers
normal

જો $z$ શુદ્ધ વાસ્તવિક સંખ્યા છે કે જેથી ${\mathop{\rm Re}\nolimits} (z) < 0$, તો $arg(z)$ = . . .. .

A

$\pi $

B

$\frac{\pi }{2}$

C

$0$

D

$ - \frac{\pi }{2}$

Solution

(a)Let $z = a + i0$, where $a < 0$. Then $z$ is represented by a point on negative side of $x$-axis, therefore $arg(z) = \pi $

Standard 11
Mathematics

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