1.

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

Answer»

X
1/x
`SQRT(2)//x`
`x//sqrt(2)`

ANSWER :B


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