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(1 + cos"" (pi)/(8))(1 + cos"" (3pi)/(8)...

`(1 + cos"" (pi)/(8))(1 + cos"" (3pi)/(8)) (1 + cos"" (5pi)/(8))(1 + cos"" (7pi)/(8))` =

A

`(1)/(8)`

B

`(1)/(2)`

C

`(1)/(sqrt(3))`

D

`(1)/(sqrt(2))`

Text Solution

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The correct Answer is:
A
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SURA PUBLICATION-TRIGONOMETRY-EXERCISE 3.12
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  14. If f(theta) = |sin theta| + |cos theta|,theta in RR, then f(theta) is ...

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