જો $x = \cos 10^\circ \cos 20^\circ \cos 40^\circ$ હોય,તો $x$ નું મૂલ્ય શું થાય?

  • A
    $\frac{1}{4}\tan 10^\circ $
  • B
    $\frac{1}{8}\cot 10^\circ $
  • C
    $\frac{1}{8}\csc 10^\circ $
  • D
    $\frac{1}{8}\sec 10^\circ $

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$\frac{3 + \cot 76^{\circ} \cot 16^{\circ}}{\cot 76^{\circ} + \cot 16^{\circ}}$ નું મૂલ્ય શોધો.

જો $\tan^2 \alpha \tan^2 \beta + \tan^2 \beta \tan^2 \gamma + \tan^2 \gamma \tan^2 \alpha + 2 \tan^2 \alpha \tan^2 \beta \tan^2 \gamma = 1$ હોય,તો $\sin^2 \alpha + \sin^2 \beta + \sin^2 \gamma$ નું મૂલ્ય કેટલું થાય?

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જો $\tan (A - B) = 1$ અને $\sec (A + B) = \frac{2}{\sqrt{3}}$ હોય,તો $B$ ની સૌથી નાની ધન કિંમત શોધો.

જો $1+\cos^{2} \theta = 3 \sin \theta \cos \theta$ હોય,તો $\cot \theta$ નું પૂર્ણાંક મૂલ્ય $(0 < \theta < \frac{\pi}{2})$ શોધો.

જો $\cos \theta = \frac{1}{2}\left( x + \frac{1}{x} \right)$ હોય,તો $\frac{1}{2}\left( x^2 + \frac{1}{x^2} \right) = $

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