સરવાળો શોધો: $\sin^2(3^{\circ}) + \sin^2(6^{\circ}) + \sin^2(9^{\circ}) + \dots + \sin^2(84^{\circ}) + \sin^2(87^{\circ}) + \sin^2(90^{\circ})$

  • A
    $\frac{31}{2}$
  • B
    $\frac{39}{2}$
  • C
    $\frac{59}{2}$
  • D
    $36$

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સમીકરણ $(\sin x - x)(\cos x - x^2) = 0$ ના વાસ્તવિક ઉકેલોની સંખ્યા કેટલી છે?

જો $0 < B < A < \frac{\pi}{4}$,$\cos^2 B - \sin^2 A = \frac{\sqrt{3}+1}{4\sqrt{2}}$ અને $2 \cos A \cos B = \frac{1+\sqrt{2}+\sqrt{3}}{2\sqrt{2}}$ હોય,તો $\cos^2 \frac{4B}{3} - \sin^2 \frac{4A}{5} =$

$\sec {50^o} + \tan {50^o}$ ની કિંમત શું થાય?

ધારો કે $E = \left( 1 - \frac{\cos 61^\circ}{\cos 1^\circ} \right) \left( 1 - \frac{\cos 62^\circ}{\cos 2^\circ} \right) \dots \left( 1 - \frac{\cos 119^\circ}{\cos 59^\circ} \right)$,તો $E$ ની કિંમત શોધો.

$0 < x \leq \pi$ માટે, $\sinh ^{-1}(\cot x)$ ની કિંમત શું થાય?

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