$2(\sin^6 \theta + \cos^6 \theta) - 3(\sin^4 \theta + \cos^4 \theta) + 1$ ની કિંમત શોધો.

  • A
    $2$
  • B
    $0$
  • C
    $4$
  • D
    $6$

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$\cos \frac{2\pi}{15} \cos \frac{4\pi}{15} \cos \frac{8\pi}{15} \cos \frac{16\pi}{15} = $

ધારો કે $f_k(x) = \frac{1}{k}(\sin^k x + \cos^k x)$ જ્યાં $x \in R$ અને $k \ge 1$ છે. તો $f_4(x) - f_6(x)$ ની કિંમત શોધો.

જો $\sin \theta + \cos \theta = 1$ હોય,તો $\sin \theta \cos \theta = $

$\tan 81^{\circ}-\tan 63^{\circ}-\tan 27^{\circ}+\tan 9^{\circ}$ ની કિંમત શોધો.

જો $(1 + \sin A)(1 + \sin B)(1 + \sin C) = (1 - \sin A)(1 - \sin B)(1 - \sin C)$ હોય,તો દરેક બાજુ કોના બરાબર થાય?

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