$n \in Z^{+}$ માટે,$(1+\sin \theta+i \cos \theta)^n+(1+\sin \theta-i \cos \theta)^n=$

  • A
    $2^{n+1} \cdot \cos ^n\left(\frac{\pi}{4}-\frac{\theta}{2}\right) \cos \left(\frac{n \pi}{4}-\frac{\theta}{2}\right)$
  • B
    $2^{n+1} \cdot \cos ^n\left(\frac{\pi}{4}-\frac{\theta}{2}\right) \cdot \sin \left(\frac{n \pi}{4}-\frac{\theta}{2}\right)$
  • C
    $2^{n+1} \cdot \cos ^n\left(\frac{\pi}{4}-\frac{\theta}{2}\right) \cos \left(\frac{n \pi}{4}-\frac{n \theta}{2}\right)$
  • D
    $2^{n+1} \cdot \cos ^n\left(\frac{\pi}{4}-\frac{\theta}{2}\right) \sin \left(\frac{n \pi}{4}-\frac{n \theta}{2}\right)$

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Similar Questions

ધારો કે $\alpha = \frac{-1 + i\sqrt{3}}{2}$ અને $\beta = \frac{-1 - i\sqrt{3}}{2}$, જ્યાં $i = \sqrt{-1}$. જો $(7 - 7\alpha + 9\beta)^{20} + (9 + 7\alpha - 7\beta)^{20} + (-7 + 9\alpha + 7\beta)^{20} + (14 + 7\alpha + 7\beta)^{20} = m^{10}$ હોય, તો $m$ ની કિંમત . . . . . . છે.

$\frac{(\sin \frac{\pi}{8} + i \cos \frac{\pi}{8})^8}{(\sin \frac{\pi}{8} - i \cos \frac{\pi}{8})^8}$ ની કિંમત શોધો.

જો $z_1$ અને $z_2$ એ એકમના $n^{\text{th}}$ મૂળ પૈકીના બે એવા હોય કે જેથી તેમને જોડતો રેખાખંડ ઉગમબિંદુ પર કાટખૂણો આંતરે,તો ધન પૂર્ણાંક $k$ માટે,$n$ નું સ્વરૂપ શું હશે?

જો $z+\frac{1}{z}=1$ હોય,તો $\frac{\left(z^{20}+1\right)\left(z^{40}+1\right)\left(z^{60}+1\right)}{z^{60}}=$

$(27)^{1/3} = $

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