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જો $\sin A + \sin B = \frac{1}{2}$ અને $\cos A + \cos B = 1$ હોય,તો $\sin \left(\frac{A-B}{2}\right)$ ની કિંમત શોધો.

$\cos ^2 10^{\circ}+\cos ^2 50^{\circ}-\sin 40^{\circ} \sin 80^{\circ}$ ની કિંમત શોધો.

$\tan 81^{\circ}-\tan 63^{\circ}-\tan 27^{\circ}+\tan 9^{\circ}$ ની કિંમત શોધો.

જો $\tan \left(\frac{\pi}{4}+\frac{\alpha}{2}\right)=\tan ^3\left(\frac{\pi}{4}+\frac{\beta}{2}\right)$ હોય,તો $\frac{3+\sin ^2 \beta}{1+3 \sin ^2 \beta}=$

જો $\sin 3\alpha = 4 \sin \alpha \cdot \sin(x + \alpha) \cdot \sin(x - \alpha)$ જ્યાં $\alpha \neq n\pi, n \in Z$, તો $x$ ના તમામ શક્ય મૂલ્યો છે

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