સંખ્યા $\sum_{k=0}^{44} \frac{1}{\cos k^{\circ} \cos (k+1)^{\circ}}$ નો પૂર્ણાંક ભાગ શોધો.

  • A
    $50$
  • B
    $52$
  • C
    $57$
  • D
    $59$

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જો $2 \sec 2\alpha = \tan \beta + \cot \beta$ હોય,તો $\alpha + \beta$ ની એક કિંમત શું થાય?

$6(\sin^6 \theta + \cos^6 \theta) - 9(\sin^4 \theta + \cos^4 \theta) + 4$ ની કિંમત શોધો.

$\sin \frac{\pi}{16} \sin \frac{3 \pi}{16} \sin \frac{5 \pi}{16} \sin \frac{7 \pi}{16}$ ની કિંમત શોધો.

$\sum_{k=1}^3 \cos ^2\left((2 k-1) \frac{\pi}{12}\right)$ ની કિંમત શોધો.

$\sin ^3 10^{\circ}+\sin ^3 50^{\circ}-\sin ^3 70^{\circ}=$

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