જો $\cot \theta + \tan \theta = 3$ અને $1 - \cos^2 \theta - \alpha \cos \theta = 0$ હોય,તો

  • A
    $6 \alpha^2(9 - \alpha^2) = 1$
  • B
    $6 \alpha^2(\alpha^2 - 9) = 1$
  • C
    $9 \alpha^2(6 - \alpha^2) = 1$
  • D
    $9 \alpha^2(\alpha^2 - 6) = 1$

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ધારો કે $n$ એક ધન પૂર્ણાંક છે જેથી $\sin \frac{\pi }{2^n} + \cos \frac{\pi }{2^n} = \frac{\sqrt{n}}{2}$ થાય. તો

સમીકરણ $\cos x - x + \frac{1}{2} = 0$ નું એક બીજ કયા અંતરાલમાં આવેલું છે?

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ધન પૂર્ણાંક $n$ માટે,ધારો કે ${f_n}(\theta ) = \left( {\tan \frac{\theta }{2}} \right)(1 + \sec \theta )(1 + \sec 2\theta )(1 + \sec 4\theta ) \dots (1 + \sec {2^n}\theta ).$ તો

પદાવલિ $\frac{\tan A}{1 - \cot A} + \frac{\cot A}{1 - \tan A}$ ને નીચે મુજબ લખી શકાય:

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