Question

The portion of the line 4 x + 5 y = 20 in the first quadrant is trisected by the lines L 1 L 1 and L 2 L 2 passing through the origin. The tangent of an angle between the lines L 1 L 1 and L 2 L 2 is :
(1) 8/5
(2) 25/ 41
(3) 2/ 5
(4) 30/ 41