((x/a)sin c-(y/b)cos c)=1 and ((x/a)cos c+(y/b)sin c)=1....prove that : (x^2/a^2)+(y^2/b^2)=2

((x/a)sin c-(y/b)cos c)=1 and ((x/a)cos c+(y/b)sin c)=1....prove that

1.	((x/a)sin c-(y/b)cos c)=1 and ((x/a)cos c+(y/b)sin c)=1....prove that : (x^2/a^2)+(y^2/b^2)=2
Answer» Hii