1.

Let f(x)=e^(cos^(-1)sin(x+pi//3)) then

Answer»

`F((8pi)/9)=E^(5pi//18)`
`f((8pi)/9)=e^(13pi//18)`
`f(-(7pi)/4)=e^(pi//12)`
`f(-(7pi)/4)=e^(11pi//12)`

ANSWER :B::C


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