Question

132. [1 + cos(π/8)][1 + cos(3π/8)] [1 + cos(5π/8)][1 + cos(7π/8)] is equal to

A. 7/2
B.(1 + √2)/2√2
C. 1/2
D. 1/8
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Answer 1

the solution to the question is option (D)

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