Find the acute angle between the pair of lines represented by `x(cosalpha-ys inalpha)^2=(x^2+y^2)sin^2alpha`

Find the acute angle between the pair of lines represented by x(cosalpha-ysinalpha)^2=(x^2+y^2)sin^2alpha

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

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

Find the acute angle between the pair of lines represented by x(cos alpha-y sin alpha)^(2)=(x^(2)+y^(2))sin^(2)alpha

Find the acute angle between the pair of lines represented by equation (xcosalpha-ysinalpha)^(2)=(x^(2)+y^(2))sin^(2)alpha where alpha lt (pi)/(4)

The angle between the pair of lines represented by 2x^2-7xy+3y^2=0 is