Class 11 Mathematics 4-1.Complex numbers De Moivre's theorem and Roots of unity

Easy

यदि $y = \cos \theta + i\sin \theta$ है,तो $y + \frac{1}{y}$ का मान क्या होगा?

A
$2\cos \theta$
B
$2\sin \theta$
C
$2\csc \theta$
D
$2\tan \theta$

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Class 11 Questions

Class 11

Mathematics Questions

Chapter

4-1.Complex numbers

Subtopic

De Moivre's theorem and Roots of unity

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