Show that the equation `sec^2 theta=(4xy)/(x+y)^2` is only possible when x=y

Show that the relation sec^2 theta = (4xy)/(x+y)^2 is possible, only when x=y.

If x and y are real, show that the equation : sec^2 theta= (4xy)/(x+y)^2 is valid only when x = y ne 0 .

If x and y be real, show that the equation sec ^(2) theta=(4 xy)/((x+y)^(2)) is possible only when x=y

If x and y be real, show that the equation : sin^2 theta= (x^2+y^2)/(2xy) is possible only when x =y ne 0 .

Show that sec^2theta=(4xy)/(x+y)^2 is possible only if x = y

sec^2theta=4xy/(x+y)^2 is true if and only if

The equation sin^2theta=(x^2+y^2)/(2x y),x , y!=0 is possible if

The equation sin^2theta=(x^2+y^2)/(2x y),x , y!=0 is possible if

The equation sin^2theta=(x^2+y^2)/(2x y),x , y!=0 is possible if

The equation sin^2theta=(x^2+y^2)/(2x y),x , y!=0 is possible if