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यदि $\sin x + \sin y = \frac{\sqrt{3}+1}{2}$ और $\cos x + \cos y = \frac{\sqrt{3}-1}{2}$ है,तो $\tan^2 \left(\frac{x-y}{2}\right) + \tan^2 \left(\frac{x+y}{2}\right) = $

यदि $a \cos^3 \alpha + 3a \cos \alpha \sin^2 \alpha = m$ और $a \sin^3 \alpha + 3a \cos^2 \alpha \sin \alpha = n$ है,तो $(m + n)^{2/3} + (m - n)^{2/3}$ का मान ज्ञात कीजिए:

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यदि $2y \cos \theta = x \sin \theta$ और $2x \sec \theta - y \csc \theta = 3$ है,तो $x^2 + 4y^2 = $

$\cos^2 73^\circ + \cos^2 47^\circ + (\cos 73^\circ \cdot \cos 47^\circ)$ का सटीक मान क्या है?

$\frac{\sqrt{2}-\sin \alpha-\cos \alpha}{\sin \alpha-\cos \alpha}=$

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