[a^(2)x+b^(2)y=c^(2)],[b^(2)x+a^(2)y=d^(2)]

Solve the following system of equations by method of cross-multiplication: a^(2)x+b^(2)y=c^(2),quad b^(2)x+a^(2)y=d^(2)

If x=a sec theta and y=b tan theta, then b^(2)x^(2)-a^(2)y^(2)=( a )ab(b)a^(2)-b^(2)(c)a^(2)+b^(2) (d) a^(2)b^(2)

If there are two points A and B on rectangular hyperbola xy=c^(2) such that abscissa of A= ordinate of B, then locusof point of intersection of tangents at A and B is (a) y^(2)-x^(2)=2c^(2)( b) y^(2)-x^(2)=(c^(2))/(2) (c) y=x( d) non of these

Solve the following system of equations by method of cross-multiplication: a^2x+b^2y=c^2,\ \ \ \ b^2x+a^2y=d^2

Solve: a^2x+b^2y=c^2; b^2x+a^2y=d^2

If a sin^(2)x+b cos^(2)x=c, b sin^(2)y+a cos^(2)y=d and atan x=btany then the value of ((d-a)(c-a))/((b-c)(b-d))=

If x=a cos theta and y=b sin theta, then b^(2)x^(2)-a^(2)y^(2)=a^(2)b^(2)( b) ab(c)a^(4)b^(4)(d)a^(2)+b^(2)

If x=10 and y=0.1, which of the following is the greatest? x^(2)+y^(2)( b) x^(2)-y^(2)( c) x^(2)backslash y^(2) (d) (x^(2))/(y^(2))