8 3 8 5 8 7 8 is equal to
Mathematics · JEE Main · NTA Exams — Trigonometry
\(\cos \frac{\pi}{8} \cos \frac{3 \pi}{8} \cos \frac{5 \pi}{8} \cos \frac{7 \pi}{8}\) is equal to
- 1/2
- \(\frac{1-\sqrt{2}}{2 \sqrt{2}}\)
- 1/8
- \(\frac{1+\sqrt{2}}{2 \sqrt{2}}\)
Answer
(C) 1/8
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