Let x=sin1^(@), then the value of the ex...

Let `x=sin1^(@)`, then the value of the expression `(1)/(cos 0^(@).cos 1^(@))+(1)/(cos 1^(@).cos 2^(@))+(1)/(cos 2^(@),cos3^(@))+……..+(1)/(cos 44^(@).cos45^(@))` is equal to

A

x

B

1/x

C

`sqrt(2)//x`

D

`x//sqrt(2)`

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The correct Answer is:

B

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