જો $\cos x + \cos y = -\cos \alpha$ અને $\sin x + \sin y = -\sin \alpha$ હોય,તો $\cot \left(\frac{x+y}{2}\right) = $

  • A
    $-\cot \alpha$
  • B
    $\cot \alpha$
  • C
    $-\tan \alpha$
  • D
    $\tan \alpha$

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સમીકરણ $\frac{\sin^3 \theta - \cos^3 \theta}{\sin \theta - \cos \theta} - \frac{\cos \theta}{\sqrt{1 + \cot^2 \theta}} - 2 \tan \theta \cot \theta = -1$ ક્યારે સાચું છે?

$\sin 5^{\circ} + \sin 10^{\circ} + \sin 15^{\circ} + \dots + \sin 350^{\circ} + \sin 355^{\circ}$ ની કિંમત શોધો.

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જો $\theta$ એ લઘુકોણ હોય અને $2 \sin ^2 \theta = \cos ^4 \frac{\pi}{8} + \sin ^4 \frac{3 \pi}{8} + \cos ^4 \frac{5 \pi}{8} + \sin ^4 \frac{7 \pi}{8}$ હોય,તો $\theta =$

જો $\tan \theta + \cot \theta = 2$ હોય,તો $\sin \theta$ ની કિંમત કેટલી થાય?

જો $\cos 2B = \frac{\cos(A+C)}{\cos(A-C)}$ હોય,તો $\tan A, \tan B, \tan C$ એ

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