કિંમત શોધો: $\sin 21^{\circ} \cos 9^{\circ}-\cos 84^{\circ} \cos 6^{\circ}$

  • A
    $1$
  • B
    $\frac{1}{4}$
  • C
    $\frac{1}{2}$
  • D
    $\frac{3}{2}$

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જો $\sin x + \sin y = \frac{7}{5}$ અને $\cos x + \cos y = \frac{1}{5}$ હોય,તો $\sin(x + y)$ ની કિંમત શોધો.

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.

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 $|\cos x + \sin x| + |\cos x - \sin x| = 2 \sin x$ અને $x \in [0, 2\pi]$ હોય,તો $x$ ની મહત્તમ પૂર્ણાંક કિંમત શોધો.

જો $\sin \theta + \operatorname{cosec} \theta = 2$ હોય,તો $\sin^{10} \theta + \operatorname{cosec}^{10} \theta$ નું મૂલ્ય કેટલું થાય?

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