$\frac{1}{4} [\sqrt{3} \cos 23^\circ - \sin 23^\circ] = $

  • A
    $\cos 43^\circ$
  • B
    $\cos 7^\circ$
  • C
    $\cos 53^\circ$
  • D
    આમાંથી કોઈ નહીં

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જો $\cot \alpha = \frac{1}{2}$ અને $\sec \beta = -\frac{5}{3}$,જ્યાં $\alpha \in \left(\pi, \frac{3\pi}{2}\right)$ અને $\beta \in \left(\frac{\pi}{2}, \pi\right)$ હોય,તો $\tan(\alpha + \beta)$ ની કિંમત શોધો.

$\frac{3 + \cot 76^{\circ} \cot 16^{\circ}}{\cot 76^{\circ} + \cot 16^{\circ}}$ ની કિંમત શોધો.

$\cos ^{2} 45^{\circ}-\sin ^{2} 15^{\circ}$ નું મૂલ્ય શું છે?

$\frac{\sin^2 A - \sin^2 B}{\sin A \cos A - \sin B \cos B} = $

સાબિત કરો કે $\frac{\sin (x+y)}{\sin (x-y)} = \frac{\tan x + \tan y}{\tan x - \tan y}$.

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