Three Dimensional Geometry

Bihar Board Class 12 · Mathematics · 89 past questions

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1. Q74 20172015

   The direction ratios of the normal to the plane $7x+4y-2z+5=0$ are

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2. Q75 20162015

   The direction cosines of the y-axis are

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3. Q83 2015

   The direction ratios of the line joining the points $(x_1,y_1,z_1)$ and $(x_2,y_2,z_2)$ are

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4. Q84 2015

   The co-ordinates of the midpoint of the line segment joining the points $(2,3,4)$ and $(8,-3,8)$ are

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5. Q85 2015

   If the direction cosines of the two straight lines are $l_1,m_1,n_1$ and $l_2,m_2,n_2$ then the cosine of the…

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6. Q86 2015

   If the line $\frac{x-x_1}{l}=\frac{y-y_1}{m}=\frac{z-z_1}{n}$ is parallel to the plane $ax+by+cz+d=0$, then

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7. Q87 2015

   If the planes $a_1x+b_1y+c_1z+d_1=0$ and $a_2x+b_2y+c_2z+d_2=0$

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8. Q88 2015

   The distance of the plane $2x-3y+6z+7=0$ from the point $(2,-3,-1)$

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