Introduction to 3DHard
Question
The cosines of the angle between any two diagonals of a cube is -
Options
A.1/3
B.1/2
C.2/3
D.1 / √3
More Introduction to 3D Questions
If three consecutive vertices of a parallelogram are A (1, 2, 3), B (− 1, − 2, − 1) and C (2, 3, 2). I...The line joining the points (2, −3, 1) and (3, − 4, − 5) and cuts the plane 2x + y + z = 7 in those po...If A = (0, 1, −2), B = (2, −1, 0), C = (1, 2, 3), then a bisector of angle BAC has direction ratios...The line which contains all points (x, y, z) which are of the form (x, y, z) = (2, -2, 5) + λ (1, -3, 2) intersects...The co-ordinates of points A, B, C, D are (a, 2, 1), (1, −1, 1), (2, −3, 4) and (a + 1, a + 2, a + 3) respec...