$\frac{1}{4} \tan \frac{\pi}{8} + \frac{1}{8} \tan \frac{\pi}{16} + \frac{1}{16} \tan \frac{\pi}{32} + \dots \infty$ પદોનું મૂલ્ય કેટલું થાય?

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

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$\sec ^{2} 12^{\circ}-\frac{1}{\tan ^{2} 78^{\circ}}$ ની કિંમત શોધો.

$\Delta ABC$ માં,$\angle B = \frac{\pi}{3}$,$\angle C = \frac{\pi}{4}$ અને $D$ એ $BC$ ને $1:3$ ના ગુણોત્તરમાં આંતરિક રીતે વિભાજિત કરે છે,તો $\frac{\sin \angle BAD}{\sin \angle CAD}$ ની કિંમત શોધો.

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$\sin ^2 \frac{\pi }{8} + \sin ^2 \frac{3\pi }{8} + \sin ^2 \frac{5\pi }{8} + \sin ^2 \frac{7\pi }{8} = $

જો $\tan \theta = \frac{p}{q}$ હોય,તો $\frac{p \sin \theta - q \cos \theta}{p \sin \theta + q \cos \theta} = $

જો $\tan x = \frac{b}{a}$ હોય,તો $\sqrt {\frac{{a + b}}{{a - b}}} + \sqrt {\frac{{a - b}}{{a + b}}} = $

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