Mathematics

Mathematics

Problem

The sides AB, BC, CD and DA of a quadrilateral have the equations x+2y=3x + 2y = 3, x=1x = 1, x−3y=4x - 3y = 4, 5x+y+12=05x + y + 12 = 0 respectively, then the angle between the diagonals AC and BD is :- (1) 60∘60^\circ (2) 45∘45^\circ (3) 90∘90^\circ (4) None of these

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