$\cos \frac{2\pi}{28} \csc \frac{3\pi}{28} + \cos \frac{6\pi}{28} \csc \frac{9\pi}{28} + \cos \frac{18\pi}{28} \csc \frac{27\pi}{28}$ નું ચોક્કસ મૂલ્ય શું છે?

  • A
    $-1/2$
  • B
    $1/2$
  • C
    $1$
  • D
    $0$

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Similar Questions

$0 \leq P, Q \leq \frac{\pi}{2}$ માટે, જો $\sin P + \cos Q = 2$ હોય, તો $\tan \left(\frac{P + Q}{2}\right)$ ની કિંમત શોધો.

$x$ ની કઈ કિંમત માટે $\cos x > \sin x$ થાય,જ્યાં $x \in \left( \frac{\pi}{2}, \frac{3\pi}{2} \right)$?

ધારો કે $P = \{ \theta : \sin \theta - \cos \theta = \sqrt{2} \cos \theta \}$ અને $Q = \{ \theta : \sin \theta + \cos \theta = \sqrt{2} \sin \theta \}$ બે ગણ છે. તો

જો $\operatorname{sech}^{-1} x = \log 2$ અને $\operatorname{cosech}^{-1} y = -\log 3$ હોય,તો $(x + y) = $

$\cos^3 110^{\circ} + \cos^3 10^{\circ} + \cos^3 130^{\circ} = $

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