જો $a \sin^2 \theta + b \cos^2 \theta = c$ હોય,તો $\tan^2 \theta$ ની કિંમત શું થાય?

  • A
    $\frac{b-c}{a-c}$
  • B
    $\frac{c-b}{a-c}$
  • C
    $\frac{a-c}{b-c}$
  • D
    $\frac{a-c}{c-b}$

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જો $\tan A = 2\tan B + \cot B$ હોય,તો $2\tan (A - B) = $

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

$\cos^3 110^{\circ} + \cos^3 10^{\circ} + \cos^3 130^{\circ} = $

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

શ્રેણી $\sum_{n=1}^{\infty} \sin \left(\frac{n! \pi}{720}\right)$ નો સરવાળો શું થાય?

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