Trigonometric EquationHard
Question
a square of side a lies above the x-axis and has one vertex at the origin. The side passing through the origin makes an angle α (0 < α < 
) with the positive direction of x-axis. The equation of its diagonal not passing through the origin is
) with the positive direction of x-axis. The equation of its diagonal not passing through the origin isOptions
A.y (cos α - sin α) - x (sin α - cos α) = a
B.y(cos α + sin α) + x (sin α - cos α) = a
C.y (cos α + sin α) + x (sin α + cos α) = a
D.y (cos α + sin α) + x (cos α - sin α) = a