$\tan 70^{\circ} - \tan 20^{\circ} = a \cdot \tan 50^{\circ}$ માં $a$ ની કિંમત શોધો.

  • A
    $-4$
  • B
    $4$
  • C
    $-2$
  • D
    $2$

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Similar Questions

$1+\cos 10^{\circ}+\cos 20^{\circ}+\cos 30^{\circ}=$

સાબિત કરો કે $\frac{\sin x-\sin y}{\cos x+\cos y}=\tan \left(\frac{x-y}{2}\right)$

જો $\cos (\alpha+\beta)=\frac{4}{5}$,$\sin (\alpha-\beta)=\frac{5}{13}$ અને $\alpha, \beta$ એ $0$ અને $\frac{\pi}{4}$ ની વચ્ચે હોય,તો $\tan 2 \alpha$ ની કિંમત શોધો.

$\tan 100^\circ + \tan 125^\circ + \tan 100^\circ \tan 125^\circ = $

જો $\theta$ અને $\phi$ એ $1^{st}$ ચરણમાં આવેલા ખૂણાઓ હોય કે જેથી $\tan \theta = 1/7$ અને $\sin \phi = 1/\sqrt{10}$ હોય,તો:

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