यदि $z = \cos \theta + i \sin \theta$ है,तो $z^r + (\bar{z})^r = $

  • A
    $ \cos r \theta $
  • B
    $ 2 \cos r \theta $
  • C
    $ \sin r \theta $
  • D
    $ 2 \sin r \theta $

Explore More

Similar Questions

यदि $1, \omega, \omega^2$ इकाई के घनमूल हैं,तो $\frac{1}{1+2 \omega}+\frac{1}{2+\omega}-\frac{1}{1+\omega}=$

मान ज्ञात कीजिए: $[\sqrt{2}(\cos 56^{\circ} 15^{\prime} + i \sin 56^{\circ} 15^{\prime})]^8$

यदि $(1 + x)^n = C_0 + C_1x + C_2x^2 + ..... + C_nx^n$ है,तो $C_0 - C_2 + C_4 - C_6 + .....$ का मान क्या है?

Difficult
View Solution

$(\cos 4 + i \sin 4 + 1)^{2020}$ का वास्तविक भाग $.........$ है।

यदि $z = \left(\frac{\sqrt{3}+i}{2}\right)^5 + \left(\frac{\sqrt{3}-i}{2}\right)^5$ है, तो

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo