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Let x = n m (m, n are co-prime natural numbers) be a solution of the equation cos ) x sin 2 ( 1 – = 9 1 and let α , β ( α > β ) be the roots of the equation mx 2 – nx – m + n = 0. Then the point ( α , β ) lies on the line

1. 5x + 8y = 9
2. 5x – 8y = – 9
3. 3x + 2y = 2
4. 3x – 2y = – 2

Correct answer: 5x + 8y = 9

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