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The value of (1+cospi/8)(1+cos(3pi)/8)(1...

The value of `(1+cospi/8)(1+cos(3pi)/8)(1+cos(5pi)/8)(1+cos(7pi)/8)i s` 1/4 (b) 3/4 (c) 1/8 (d) 3/8

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The value of (1+cospi/8)(1+cos(3pi)/8)(1+cos(5pi)/8)(1+cos(7pi)/8)i s (a)1/4 (b) 3/4 (c) 1/8 (d) 3/8

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