Teaching RPSC School Lecturer Mock Test Series 2024 Mathematics Complex Numbers

यदि x = cos θ + i sin θ है, तो \({x^n} + \frac{1}{{{x^n}}}\) का मान क्या है?

1
2 cos θ
2
con nθ
3
2 cos nθ
4
2 sin nθ
5
अनुत्तरित प्रश्न
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