$\cos \frac{\pi}{10} \cos \frac{2\pi}{10} \cos \frac{4\pi}{10} \cos \frac{8\pi}{10} \cos \frac{16\pi}{10}$ का मान है
- A$\frac{1}{32}$
- B$\frac{1}{16}$
- C$\frac{\cos(\pi/10)}{16}$
- D$-\frac{1}{16}$
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जहाँ परिभाषित हो,वहाँ व्यंजक $(sinx + cosecx)^2 + (cosx + secx)^2 - (tanx + cotx)^2$ का मान किसके बराबर है?
यदि $0 < x < \pi$ और $\cos x + \sin x = \frac{1}{2}$ है,तो $\tan x$ का मान ज्ञात कीजिए।
DifficultAIEEE 2006
View Solution$\operatorname{cosec} 48^{\circ}+\operatorname{cosec} 96^{\circ}+\operatorname{cosec} 192^{\circ}+\operatorname{cosec} 384^{\circ} = $
$\cot 16^{\circ} \cot 44^{\circ} + \cot 44^{\circ} \cot 76^{\circ} - \cot 76^{\circ} \cot 16^{\circ} = $
$\frac{\cos 13^{\circ}-\sin 13^{\circ}}{\cos 13^{\circ}+\sin 13^{\circ}}+\frac{1}{\cot 148^{\circ}}$ का मान ज्ञात कीजिए।
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