1.

Let `x=sin1^0,`then the value of the expression.`1/(cos0^0dotcos1^0)+1/(cos1^0dotcos2^0)+1/(cos2^0dotcos3^0)+1/(cos44^0dotcos45^0)`is equal to(a) `x`(b) `1/x`(c) `(sqrt(2))/x`(d) `x/(sqrt(2))`

Answer» `1/sin1[(sin(1-0))/(cos0cos1)+(sin(2-1))/(cos2cos2)+....+(sin(45-44))/(cos44cos45)]`
`1/sin1[tan1-tan0+tan2-tan2+tan3-tan2+...+tan45-tan44]`
`1/sin1*[1-0]`
`1/sin1`
`1/x`.


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