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# If P (a cos, bsin) is a point on an ellipse , then ' ' is –

- Angle of OP line from positive direction of x-axis (O is origin)
- Angle of OQ line from positive direction of x-axis [when Q is (a cos, a sin)]
- It depends on the point p
- None of the above

## The correct answer is: Angle of OQ line from positive direction of x-axis [when Q is (a cos, a sin)]

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