Question

If x/a*cosA + y/b*sinA =1 and x/a*sinA - y/b*cosA =1 prove that x^2/a^2 + y^2/b^2=2

Answer 1

Answer:

if x/a*cosA+y/b*sinA=1and x/a*sinA-y/b*cosA=1 prove thatx^2/a^2+y^2/b^2=2