1.

Find the value of (1 + Cos π/8)×.(1+cos3π/8)×(1+cos 5π/8 ) ×(1+cos7π/8) .

Answer»

Find the value of (1 + Cos π/8)×.(1+cos3π/8)×(1+cos 5π/8 ) ×(1+cos7π/8) .



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