Distance between the lines 5x + 3y – 7 = 0 and 15x + 9y + 14 = 0 is

Two vertices of a triangle are (-2, -1) and (3, 2) and third vertex lies on the line x + y = 5. If the area of the triangle is 4 square units, then the third vertex is

The inclination of the straight line passing through the point (-3, 6) and the mid-point of the line joining the point (4, -5) and (-2, 9) is

The angle between the lines 2x – y + 3 = 0 and x + 2y + 3 = 0 is

The value of λ for which the lines 3x + 4y = 5, 5x + 4y = 4 and λx + 4y = 6 meet at a point is