જો $\tan \beta = \frac{n \sin \alpha \cos \alpha}{1 - n \cos^2 \alpha}$ હોય,તો $\tan (\alpha + \beta) \cdot \cot \alpha =$

  • A
    $\frac{-1}{n-1}$
  • B
    $n+1$
  • C
    $1-n$
  • D
    $\frac{1}{n+1}$

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જો $0 < \theta < \frac{\pi}{2}$ અને $\sin \theta \cos \theta = \frac{12}{25}$ હોય,તો $\sin^4 \theta + \cos^4 \theta$ ની કિંમત શોધો.

$\tan {20^\circ} + 2\tan {50^\circ} - \tan {70^\circ}$ નું મૂલ્ય કેટલું થાય?

જો $x + y = 3 - \cos 4\theta$ અને $x - y = 4 \sin 2\theta$ હોય,તો:

$\sum_{k=1}^3 \cos^2 \left((2k-1) \frac{\pi}{12}\right)$ ની કિંમત શોધો.

જો $\cosh 2x = 199$ હોય,તો $\coth x$ ની કિંમત શોધો.

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