Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesMix Examples-Trigonometrical Ratios, Functions and Identities
Difficult$\theta$ का सबसे छोटा धनात्मक मान (डिग्री में) जिसके लिए $\tan(\theta+100^{\circ})=\tan(\theta+50^{\circ}) \tan(\theta) \tan(\theta-50^{\circ})$ मान्य है,वह है ($^{\circ}$ में)
- A$60$
- B$45$
- C$30$
- D$15$
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यदि $\cos \frac{\pi}{15} \cos \frac{2 \pi}{15} \cos \frac{4 \pi}{15} \cos \frac{5 \pi}{15} \cos \frac{7 \pi}{15} \cos \frac{30 \pi}{15} = x$ है,तो $\frac{1}{8x} =$
यदि $\sum_{r=1}^{50} \tan ^{-1} \frac{1}{2 r^2}=p$ है,तो $\tan p$ का मान ज्ञात कीजिए।
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