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જો $A=35^{\circ}, B=15^{\circ}$ અને $C=40^{\circ}$ હોય,તો $\tan A \cdot \tan B+\tan B \cdot \tan C+\tan C \cdot \tan A$ ની કિંમત શોધો.

$\cos \left(\frac{7 \pi}{12}\right)$ નું મૂલ્ય શું છે?

જો $b \sin \alpha = a \sin (\alpha + 2\beta)$ હોય,તો $\frac{a + b}{a - b} = $

ધારો કે $\cos(\alpha+\beta)=-\frac{1}{10}$ અને $\sin(\alpha-\beta)=\frac{3}{8}$ જ્યાં $0 < \alpha < \frac{\pi}{3}$ અને $0 < \beta < \frac{\pi}{4}$. જો $\tan 2\alpha=\frac{3(1-r\sqrt{5})}{\sqrt{11}(s+\sqrt{5})}$, જ્યાં $r, s \in N$, તો $r+s$ ની કિંમત . . . . . . થાય.

જો $\tan \alpha = \frac{m}{m + 1}$ અને $\tan \beta = \frac{1}{2m + 1}$ હોય,તો $\alpha + \beta = $

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