3-d

Related Questions

• In a three dimensional xyz space the equation ${{x}^{2}}-5x+6=0$ represents

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• Equation $a{{x}^{2}}+b{{y}^{2}}+c{{z}^{2}}+2fyz+2gxz+2hxy$ and $+2ux+2vy+2wz+d=0$ represents a sphere, if

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• If O be the origin and the co-ordinates of P be (1, 2, –3), then the equation of the plane passing through P and perpendicular to OP is

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• The angle between the straight lines $\frac{x-2}{2}=\frac{y-1}{5}=\frac{z+3}{-3}$and $\frac{x+1}{-1}=\frac{y-4}{8}=\frac{z-5}{4}$is

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• The value of $aa'+\,bb'+\,cc'$ being negative the origin will lie in the acute angle between the planes $an+by+cz+d=0$ and $a'x+b'y+c'z+d'=0$ , if

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