જ્યારે $\theta = \frac{\pi}{15}$ હોય,ત્યારે $(1-\cos \theta)(1+\cos \theta)(1+\cot^2 \theta)$ ની કિંમત શું થાય?

  • A
    $1$
  • B
    $\frac{1}{2}$
  • C
    $\frac{-1}{\sqrt{3}}$
  • D
    $2$

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જો $f(x) = \frac{\cot x}{1 + \cot x}$ અને $\alpha + \beta = \frac{5 \pi}{4}$ હોય,તો $f(\alpha) f(\beta)$ ની કિંમત શોધો.

પદાવલિ $\cos^2(A - B) + \cos^2 B - 2\cos(A - B)\cos A\cos B$ એ

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વિધેય $f(x) = \cos x \cos(x + 2) - \cos^2(x + 1)$ નો આલેખ શું છે?

${e^{\log_{10} \tan 1^\circ + \log_{10} \tan 2^\circ + \log_{10} \tan 3^\circ + \dots + \log_{10} \tan 89^\circ}}$ ની કિંમત શોધો.

કિંમત શોધો: $\cos \frac{\pi}{7} \cos \frac{2 \pi}{7} \cos \frac{3 \pi}{7} \cos \frac{\pi}{14} \cos \frac{3 \pi}{14} \cos \frac{5 \pi}{14}$

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