જો $\sin \theta + 2\sin \phi + 3\sin \psi = 0$ અને $\cos \theta + 2\cos \phi + 3\cos \psi = 0$ હોય,તો $\cos 3\theta + 8\cos 3\phi + 27\cos 3\psi = $ ની કિંમત શોધો.

  • A
    $\cos (3\theta + 3\phi + 3\psi )$
  • B
    $18\cos (\theta + \phi + \psi )$
  • C
    $6\cos (\theta + \phi + \psi )$
  • D
    $36\cos (\theta + \phi + \psi )$

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જો ${x_n} = \cos \left( \frac{\pi }{4^n} \right) + i \sin \left( \frac{\pi }{4^n} \right)$ હોય,તો ${x_1} \cdot {x_2} \cdot {x_3} \dots \infty = $

$(\sqrt{\sqrt{2}+1} + i\sqrt{\sqrt{2}-1})^8 =$

જો $\omega$ એ એકમનું સંકર ઘનમૂળ હોય,તો $\sin \left\{\left(\omega^{10}+\omega^{23}\right) \pi-\frac{\pi}{4}\right\}=$

$\omega$ એ એકમનું કાલ્પનિક ઘનમૂળ છે. જો $(1 + \omega^2)^m = (1 + \omega^4)^m$ હોય,તો $m$ ની ન્યૂનતમ ધન પૂર્ણાંક કિંમત શોધો.

${\left( \frac{1 + \cos \phi + i\sin \phi }{1 + \cos \phi - i\sin \phi } \right)^n} = $

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