Three Dimensional Geometry

Bihar Board Class 12 · Mathematics · 89 past questions

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1. Q13 20252024 Set J2024 Set D2019 Set F2017

   The direction cosines of z-axis are-

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2. Q71 2017

   Let $l_1,m_1,n_1$ and $l_2,m_2,n_2$ be the direction cosines of two st-lines both the lines are perpendicular…

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3. Q72 2017

   let a,b,c be the direction ratios of a line then direction cosines are

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4. Q73 2017

   A line is passing through $(\alpha,\beta,\gamma)$ and its direction cosines are $l,m,n$ then the equations of…

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5. Q74 20172015

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

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