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The coordinates of a moving point P are ...

The coordinates of a moving point P are `[(a)/(2)("coses"theta+sintheta),(b)/(2)("coses"theta-sintheta)]`, where `theta` is a variable parameter Show that , the , the equation to the locus of P is `b^(2)x^(2)-a^(2)y^(2)=a^(2)b^(2)`.

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