If `2y cos theta =x sin theta and 2x sec theta -y cosec theta =3,` then `x ^(2) +4y^(2)=`

If 2y cos theta= xsin theta and 2x sec theta-y cosec theta=3 then x^2/4+y^2=

If 2ycos = xsin theta and 2 x sec theta -y cosec theta = 3 , then the value of x^2+ 4y^2 is यदि 2ycos = xsin theta and 2 x sec theta -y cosec theta = 3 हो, तो x^2+ 4y^2 का मान क्या होगा?

If 2ycos theta =x sin theta and 2x sectheta -y "cosec"theta =3 , then the relation between x and y is:

If x sin ^3 theta +y cos^3 theta = sin theta cos theta and x sin theta =y cos theta then x^2 +y^2 is

If xcos theta- y sin theta =a, x sin theta + y cos theta = b , prove that: x^(2) + y^(2) = a^(2) + b^(2) .

If x= cosec theta -sin theta and y=sec theta-cos theta, then show that x^(2//3)+y^(2//3)=(xy)^(-2//3)