કિંમત શોધો: $\cos^2 48^\circ - \sin^2 12^\circ$

  • A
    $\frac{\sqrt{5} - 1}{4}$
  • B
    $\frac{\sqrt{5} + 1}{8}$
  • C
    $\frac{\sqrt{3} - 1}{4}$
  • D
    $\frac{\sqrt{3} + 1}{2\sqrt{2}}$

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$\tan 20^\circ + \tan 40^\circ + \sqrt{3} \tan 20^\circ \tan 40^\circ = $

જો $A$ અને $B$ $(A > B)$ લઘુકોણ હોય,$\sin (A-B)=\frac{16}{65}$ અને $\sin B=\frac{5}{13}$ હોય,તો $\tan A+\cot A=$

જો $\tan \alpha = \frac{m}{m + 1}$ અને $\tan \beta = \frac{1}{2m + 1}$ હોય,તો $\alpha + \beta = $

કિંમત શોધો: $\sin (\beta + \gamma - \alpha ) + \sin (\gamma + \alpha - \beta ) + \sin (\alpha + \beta - \gamma ) - \sin (\alpha + \beta + \gamma )$

$\cos \frac{\pi}{12} = ?$

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