AP EAMCET · Maths · Trigonometric Ratios & Identities
\(\tan \frac{2 \pi}{7} \cdot \tan \frac{4 \pi}{7}+\tan \frac{4 \pi}{7} \cdot \tan \frac{\pi}{7}+\tan \frac{\pi}{7} \cdot \tan \frac{2 \pi}{7}=\)
- A \(7\)
- B \(-7\)
- C \(3\)
- D \(-3\)
Answer & Solution
Correct Answer
(B) \(-7\)
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