List of top Mathematics Questions on Three Dimensional Geometry asked in KCET

The three points $A(2, 4, 3)$, $B(4, a, 9)$ and $C(10, -1, 7)$ form a right-angled triangle with $\angle B = 90^\circ$, then the value of 'a' is

The angle between the lines whose direction ratios are $a, b, c$ and $b - c, c - a, a - b$ is

The measure of the angle between the lines $x = k - 1, y = 2k + 1, z = 2k + 3, k \in \mathbb{R}$ and $\frac{x+1}{2} = \frac{y-2}{1} = \frac{z-1}{2}$ is