Let `A_(xy), A_(yz), A_(xz)` be the area of the projection of a plane area A on the `xy, yz, zx` plane respectively. Then `A^2=`

A_(xy),_(yz),A_(zx) be the area of projections oif asn area a o the xy,yz and zx and planes resepctively, then A^2=A^2_(xy)+A^2_(yz)+a^2_(zx)

The intersection of XY-plane and YZ-plane is known as

If A = 2i - 3 j + 4k its components in yz plane and zx plane are respectively

Let A_(1), A_(2), A_(3), A_(4) be the areas of the triangular faces of a tetrahedron, and h_(1), h_(2), h_(3), h_(4) be the corresponding altitudes of the tetrahedron. If the volume of tetrahedron is 1//6 cubic units, then find the minimum value of (A_(1) +A_(2) + A_(3) + A_(4))(h_(1)+ h_(2)+h_(3)+h_(4)) (in cubic units).

If A_(1) and A_(2) be areas of two regular polygons having the same perimeter and number of sides be n and 2n respectively, then : (A_(1))/(A_(2)) is

Let A_(1) , A_(2) and A_(3) be subsets of a set X . Which one of the following is correct ?

Through the point P(h, k, l) a plane is drawn at right angles to OP to meet co-ordinate axes at A, B and C. If OP=p, A_xy is area of projetion of triangle(ABC) on xy-plane. A_zy is area of projection of triangle(ABC) on yz-plane, then

Find the reflection of the point (alpha, beta, gamma) in the XY-plane, YZ-plane and ZX plane.

The shorteast distance from (1, 1, 1) to the line of intersection of the pair of planes xy+yz+zx+y^2=0 is

Write the degree of each polynomials given below : xy + yz^(2) - zx^(3)