જો $A > B$ અને $\tan A - \tan B = x$ તથા $\cot B - \cot A = y$ હોય,તો $\cot (A - B) = $

  • A
    $\frac{1}{y} - \frac{1}{x}$
  • B
    $\frac{1}{x} - \frac{1}{y}$
  • C
    $\frac{1}{x} + \frac{1}{y}$
  • D
    $\frac{xy}{x - y}$

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જો $\sin \theta = \frac{12}{13}$ જ્યાં $0 < \theta < \frac{\pi}{2}$ અને $\cos \phi = -\frac{3}{5}$ જ્યાં $\pi < \phi < \frac{3\pi}{2}$ હોય,તો $\sin(\theta + \phi)$ ની કિંમત શોધો.

$\sin 47^\circ + \sin 61^\circ - \sin 11^\circ - \sin 25^\circ$ ની કિંમત શોધો.

$\frac{\tan 70^o - \tan 20^o}{\tan 50^o}$ ની કિંમત શોધો.

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$\sin \left(\frac{\pi}{3}+x\right)-\cos \left(\frac{\pi}{6}+x\right) = $

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