3-d

Related Questions

• If the projections of a line on the co-ordinate axes be 2, –1, 2, then the length of the lines is

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• If a line makes angles $\alpha ,\beta ,\gamma ,\delta $ with four diagonals of a cube, then the value of ${{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +$ ${{\sin }^{2}}\gamma +{{\sin }^{2}}\delta $ is

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• The angle between a line with direction ratios 2 : 2 : 1 and a line joining (3, 1, 4) to (7, 2, 12) is

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• If $\left( \frac{1}{2},\frac{1}{3},n \right)$ are the direction cosines of a line, then the value of n is

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• The equation of plane through the line of intersection of planes $ax+by+cz+d=0$, $a'x+b'y+c'z+d'=0$ and parallel to the line $y=0,z=0$ is

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