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✓ Find the value of the expression: cos(π/9) · cos(4π/9) · cos(7π/9) | #challenge | Boris Trushin
БОРИС ТРУШИН
· APR 12, 2026
This YouTube video has 10 000 views and was published Apr 12, 2026 on Борис Трушин. That is 0.3x the channel's average views.
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