જો $\theta$ ત્રીજા ચરણમાં હોય,તો $\sqrt{4 \sin ^4 \theta+\sin ^2 2 \theta}+4 \cos ^2\left(\frac{\pi}{4}-\frac{\theta}{2}\right)=$

  • A
    $1+2 \sin \theta$
  • B
    $2$
  • C
    $1$
  • D
    $2+4 \sin \theta$

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જો $\cos x + \cos y = -\cos \alpha$ અને $\sin x + \sin y = -\sin \alpha$ હોય,તો $\cot \left(\frac{x+y}{2}\right) = $

સમીકરણ $e^{\sin x} - e^{\sin(-x)} - 4 = 0$ ને

$\operatorname{coth}^2 x - \tanh^2 x =$

જો $\sin \theta = \frac{1}{2} (x + \frac{1}{x})$ હોય,તો $\sin 3 \theta + \frac{1}{2} (x^3 + \frac{1}{x^3}) = $

ધારો કે $\frac{\pi}{2} < \theta < \pi$ અને $\cot \theta = -\frac{1}{2 \sqrt{2}}$. તો $\sin (\frac{15 \theta}{2}) (\cos 8 \theta + \sin 8 \theta) + \cos (\frac{15 \theta}{2}) (\cos 8 \theta - \sin 8 \theta)$ ની કિંમત શોધો:

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