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) = $

  • A
    $\sin 2\theta $
  • B
    $\cos 2\theta $
  • C
    $\tan 2\theta $
  • D
    $\sec 2\theta $

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$\frac{2 \tan(x)}{1-\tan^2(x)}$ ની કિંમત ધન હોય તે માટે,$x$ ની કિંમતો શોધો,જ્યાં $x \in \left(0, \frac{\pi}{2}\right)$ છે.

જો $\cos 40^\circ = x$ અને $\cos \theta = 1 - 2x^2$ હોય,તો $0^\circ$ અને $360^\circ$ ની વચ્ચે $\theta$ ના શક્ય મૂલ્યો કયા છે?

જો $\frac{1}{2}\left(\tan \left(\frac{\pi}{24}\right)+\cot \left(\frac{\pi}{24}\right)\right)=\sqrt{a^2+a}+\sqrt{a}$ હોય,તો $a=$

$\tan A + 2 \tan 2A + 4 \tan 4A + 8 \cot 8A = $

ધારો કે $0 < x < \frac{\pi}{4}.$ તો $\sec 2x - \tan 2x = $

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