If the pair of lines given by `(x^2+y^2)sin^2alpha=(xcosalpha-ysinalpha)^2` are perpendicular to each other then `alpha = `

If the pair of lines given by (x^(2)+y^(2)) sin ^(2) alpha=(x cos alpha-y sin alpha)^(2) are perpendicular to each other then alpha=

If the pair of lines given by (x^(2)+y^(2))cos^(2) theta=(x cos theta+ y sin theta)^(2) are perpendicular to each other, then theta=

If the lines represented by sin^(2)alpha(x^(2)+y^(2))=((cosalpha)x-(sinalpha)y)^(2) are perpendicular to each other, then alpha=

If the pair of lines a^(2)(x^(2)+y^(2))=(ax-by)^(2) are perpendicular to each other, then

The angle between the straight lines represented by (x^(2)+y^(2))sin^(2)alpha=(xcosalpha-ysinalpha)^(2) is

The angle between the straight lines represented b (x^(2)+y^(2))sin^(2)alpha=(xcosalpha-ysinalpha)^(2) is

The angle between the pair of lines (x^(2)+y^(2))sin^(2)alpha=(x cos theta-y sin theta)^(2);is

The angle between the pair of lines represented by (sin^(2)alpha)(x^(2)+y^(2))=(xcosalpha-ysinalpha)^(2) is

Two lines 5x+3^(alpha)y=1 and alpha x-y=0 are perpendicular to each other for some value of alpha lying in the interval: