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The sides AB, BC, CD and DA of a quadrilateral have the equations x + 2y = 3, x = 1, x - 3y = 4, 5x + y + 12 = 0 respectively, then the angle between the diagonals AC and BD is :

(a) 60°

(b) 45°

(c) 90°

(d) None of these

1 Answer

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Best answer

Correct option (c) 90°

Explanation:

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