Three Dimensional Geometry

Bihar Board Class 12 · Mathematics · 89 past questions

5 of 89 · show all

1. Q17 2025

   Direction ratios of two lines are $a_1,b_1,c_1$ and $a_2,b_2,c_2$ respectively. Both lines are parallel, if

   Try it →
2. Q22 2025

   If the lines $\frac{x+1}{a}=\frac{y-2}{b}=\frac{z-3}{c}$ and $\frac{x-2}{3}=\frac{y-5}{1}=\frac{z-6}{2}$ are…

   Try it →
3. Q28 2025 Set A2025 Set E

   If the direction ratios of two parallel lines are 2, 7, 9 and 6, 21, $x$, then the value of $x$ is

   Try it →
4. Q29 2025 Set A2025 Set E

   If the direction ratios of two parallel lines are $a, b, c$ and $x, y, z$, then $az =$

   Try it →
5. Q32 2025 Set A2025 Set E

   If the direction ratios of two mutually perpendicular lines are 5, 2, 4 and 4, 8, $x$ then the value $x$ is

   Try it →