If ` (x)/(a) cos theta + (y)/(b) sin theta = 1 , (x)/(a) sin theta - (y)/(b) cos theta =1 ` then

(x) / (a) cos theta + (y) / (b) sin theta = 1, (x) / (a) sin theta- (y) / (b) cos theta = 1 then (x ^ (2)) / (a ^ (2)) + (y ^ (2)) / (b ^ (2)) =

If (x)/(a)cos theta+(y)/(b)sin theta=1 and (x)/(a)sin theta-(y)/(b)cos theta=-1, prove that (x^(2))/(a^(2))+(y^(2))/(b^(2))=2

If (x)/(a)cos theta+(y)/(b)sin theta=1 and (x)/(a)sin theta-(y)/(b)cos theta=1 Prove that :(x^(2))/(a^(2))+(y^(2))/(b^(2))=2

If x cos theta + y sin theta = a , x sin theta - y cos theta = b then

Eliminate theta from the following equation : x cos theta - y sin theta = a, x sin theta + y cos theta = b

If x=(a+b)cos theta -b cos ((a+b)/(b))theta and y =(a+b) sin theta -b sin ((a+b)/(2b))theta then prove that

If x=(a+b)cos theta -b cos ((a+b)/(b))theta and y =(a+b) sin theta -b sin ((a+b)/(2b))theta then prove that

If x(cos theta)/(a)+y(sin theta)/(b)=1 and x(sin theta)/(a)-y(sin theta)/(b)=1 then

If tan theta = (x)/(y) , " then " (x sin theta + y cos theta)/( x sin theta - y cos theta) is equal to

If x sin^(3) theta + y cos^(3) theta = sin theta cos theta and x sin theta = y cos theta , then the value of x^(2) + y^(2) is :