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If 7 theta = (2n +1) pi, where n = 0 , ...

If `7 theta = (2n +1) pi, ` where `n = 0 , 1, 2, 3, 4,5, 6` then on the basis of above information, answer the following questions
The value of `sec pi//7 + sec 3pi//7 +sec 5pi//7` is

A

-3

B

4

C

`-4`

D

3

Text Solution

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The correct Answer is:
A
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