If `A(sinalpha,(1)/(sqrt(2)))" and "B((1)/(sqrt(2)),cosalpha)-pilealphalepi` are two points on the same side of the line `x-y=0`. Then `alpha` belongs to the interval

Options

A. `(-(pi)/(4),(pi)/(4))uu((pi)/(4),(3pi)/(4))`
B. `(-(pi)/(4),(pi)/(4))`
C. `((pi)/(4),(3pi)/(4))`
D. None of these

Answer

A