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A straight line cuts off the intercepts OA = a and OB = b on t he positive direction of x - axis and y - axis respectively. If the perpendicular from origin O to this line makes an angle of 6  with positive direction of y - axis and the area of  OAB is 3 3 98 , then a 2 – b 2 is equal to

1. 196
2. 3 196
3. 3 392
4. 98

Correct answer: 3 392

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