$\sin^2 5^\circ + \sin^2 10^\circ + \sin^2 15^\circ + \dots + \sin^2 85^\circ + \sin^2 90^\circ$ ની કિંમત શોધો.

  • A
    $7$
  • B
    $8$
  • C
    $9$
  • D
    $9\frac{1}{2}$

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જો સમીકરણ $\cosh x - \frac{4}{5} \sinh x = 1$ નો એક ઉકેલ $x = 0$ હોય,તો બીજો ઉકેલ $x =$ છે.

જો $\text{cosec } A + \cot A = \frac{11}{2}$ હોય,તો $\tan A = $

સમીકરણ $\frac{1}{\sin(\frac{\pi}{n})} = \frac{1}{\sin(\frac{2\pi}{n})} + \frac{1}{\sin(\frac{3\pi}{n})}$ નું સમાધાન કરતું $n > 3$ નું ધન પૂર્ણાંક મૂલ્ય શોધો.

ધારો કે $S = \{\theta \in [0, 2\pi] : 8^{2 \sin^2 \theta} + 8^{2 \cos^2 \theta} = 16\}$. તો $n(S) + \sum_{\theta \in S} \left(\sec \left(\frac{\pi}{4} + 2\theta\right) \operatorname{cosec} \left(\frac{\pi}{4} + 2\theta\right)\right)$ ની કિંમત શોધો.

જો $3 \sin (\alpha-\beta)=5 \cos (\alpha+\beta)$ અને $\alpha+\beta \neq \frac{\pi}{2}$ હોય,તો $\frac{\tan \left(\frac{\pi}{4}-\alpha\right)}{\tan \left(\frac{\pi}{4}-\beta\right)}=$

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