જો $\frac{\sin(x + y)}{\sin(x - y)} = \frac{a + b}{a - b}$ હોય,તો $\frac{\tan x}{\tan y}$ ની કિંમત શોધો.

  • A
    $\frac{b}{a}$
  • B
    $\frac{a}{b}$
  • C
    $ab$
  • D
    આમાંથી કોઈ નહીં

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સાબિત કરો કે: $\frac{\sin 5x + \sin 3x}{\cos 5x + \cos 3x} = \tan 4x$

$\cos 48^{\circ} \cdot \cos 12^{\circ} = ?$

જો $\tan A = -\frac{1}{2}$ અને $\tan B = -\frac{1}{3}$ હોય,તો $A + B = $

સાબિત કરો કે $\cos \left( \frac{\pi}{4} + x \right) + \cos \left( \frac{\pi}{4} - x \right) = \sqrt{2} \cos x$.

$\tan 15^{\circ}$ ની કિંમત શોધો:

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