WELCOME
GIVEN
X = 3cosθ
So cosθ = x/3
Y = 5sinθ
So sinθ = y/5
We know that
Sin2θ + cos2θ = 1
Or (x/3)2 + (y/5)2 = 1
Or x2 / 32 + y2 / 52 = 1
Thus a = 3 and b = 5
So ‘a’ is the correct graph
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