$\frac{\cos A}{1 - \sin A} = $

  • A
    $\sec A - \tan A$
  • B
    $\csc A + \cot A$
  • C
    $\tan \left( \frac{\pi}{4} - \frac{A}{2} \right)$
  • D
    $\tan \left( \frac{\pi}{4} + \frac{A}{2} \right)$

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પદાવલિ $2(\sin^6 \theta + \cos^6 \theta) - 3(\sin^4 \theta + \cos^4 \theta) + 1$ નું મૂલ્ય કેટલું થાય?

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જો $\tan \theta - \cot \theta = 0$ અને $\theta$ એ ધન લઘુકોણ હોય,તો $\frac{\tan (\theta + 15^{\circ})}{\tan (\theta - 15^{\circ})}$ ની કિંમત શોધો.

જો સમીકરણો $x = a \cos(\theta - \alpha)$ અને $y = b \cos(\theta - \beta)$ માંથી $\theta$ નો લોપ કરવામાં આવે,તો $\frac{x^2}{a^2} + \frac{y^2}{b^2} - \frac{2xy}{ab} \cos(\alpha - \beta)$ ની કિંમત કેટલી થાય?

જો $\sin \alpha = -\frac{3}{5},$ જ્યાં $\pi < \alpha < \frac{3\pi}{2}$ હોય,તો $\cos \frac{\alpha}{2} = $

જો $A + B + C = \pi$ હોય,તો $\tan^2 \frac{A}{2} + \tan^2 \frac{B}{2} + \tan^2 \frac{C}{2}$ હંમેશા કેટલા થાય?

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