જો $90^{\circ} < A < 180^{\circ}$ અને $\sin A = \frac{4}{5}$ હોય,તો $\tan \frac{A}{2} =$

  • A
    $\frac{1}{2}$
  • B
    $\frac{3}{5}$
  • C
    $\frac{3}{2}$
  • D
    $2$

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$\tan 7\frac{1}{2}^\circ$ નું મૂલ્ય કેટલું થાય?

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જો નિત્યસમ $\cos^4 \theta = a \cos 4\theta + b \cos 2\theta + c$ અમુક $a, b, c \in \mathbb{Q}$ માટે સાચું હોય,તો $(a, b, c) =$

જો $k = \sin \frac{\pi}{18} \cdot \sin \frac{5\pi}{18} \cdot \sin \frac{7\pi}{18}$ હોય,તો $k$ નું આંકડાકીય મૂલ્ય શું છે?

$\tan 3A \cdot \tan 2A \cdot \tan A = $

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