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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Similar Questions

$\sqrt{3} \operatorname{cosec} 20^{\circ} - \sec 20^{\circ}$ ની કિંમત શોધો.

$\frac{1}{4} \tan \frac{\pi}{8} + \frac{1}{8} \tan \frac{\pi}{16} + \frac{1}{16} \tan \frac{\pi}{32} + \dots \infty$ પદોનું મૂલ્ય કેટલું થાય?

જો $\sum_{r=1}^{13} \left\{ \frac{1}{\sin \left(\frac{\pi}{4} + (r-1) \frac{\pi}{6}\right) \sin \left(\frac{\pi}{4} + \frac{r\pi}{6}\right)} \right\} = a\sqrt{3} + b$,જ્યાં $a, b \in \mathbb{Z}$,તો $a^2 + b^2$ ની કિંમત શોધો:

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

જો $0 < \theta < \frac{\pi}{2}$ અને $\sin \theta \cos \theta = \frac{12}{25}$ હોય,તો $\sin^4 \theta + \cos^4 \theta$ ની કિંમત શોધો.

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