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यदि $\frac{\sin (A+B)}{\sin (A-B)}=\frac{\cos (C+D)}{\cos (C-D)}$,तो $\tan A \cot B=$

योगफल $S = \sin \theta + \sin 2\theta + \dots + \sin n\theta$ किसके बराबर है?

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यदि $\tan^2 \alpha \tan^2 \beta + \tan^2 \beta \tan^2 \gamma + \tan^2 \gamma \tan^2 \alpha + 2\tan^2 \alpha \tan^2 \beta \tan^2 \gamma = 1$ है,तो $\sin^2 \alpha + \sin^2 \beta + \sin^2 \gamma$ का मान क्या है?

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समीकरण $\frac{3 \cos 2x + \cos^3 2x}{\cos^6 x - \sin^6 x} = x^3 - x^2 + 6$ के हलों $x \in R$ का योग क्या है?

समुच्चय $\{x \in R: |\cos x| \geq \sin x\} \cap \left[0, \frac{3 \pi}{2}\right]$ किसके बराबर है?

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