જો $\sin \theta + \operatorname{cosec} \theta = 4$ હોય,તો $\sin^2 \theta + \operatorname{cosec}^2 \theta = $

  • A
    $12$
  • B
    $18$
  • C
    $16$
  • D
    $14$

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જો $\sin x + \sin y = \alpha$ અને $\cos x + \cos y = \beta$ હોય,તો $\operatorname{cosec}(x + y) = $

$\cos \frac{\pi}{7} \cos \frac{2\pi}{7} \cos \frac{3\pi}{7}$ નું મૂલ્ય શું છે?

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જો $A$ અને $B$ લઘુકોણ હોય જે $3 \cos ^2 A + 2 \cos ^2 B = 4$ અને $\frac{3 \sin A}{\sin B} = \frac{2 \cos B}{\cos A}$ નું સમાધાન કરે,તો $A + 2B =$ ($^{\circ}$ માં)

જો $\frac{\tan (\alpha+\beta-\gamma)}{\tan (\alpha-\beta+\gamma)}=\frac{\tan \gamma}{\tan \beta}$ અને $\beta \neq \gamma$ હોય,તો $\sin 2 \alpha+\sin 2 \beta+\sin 2 \gamma$ ની કિંમત શોધો.

જો $\cos x+\cos y+\cos \alpha=0$ અને $\sin x+\sin y+\sin \alpha=0$ હોય,તો $\cot \left(\frac{x+y}{2}\right)$ ની કિંમત શોધો.

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