Show that each of the following pairs of planes are at right angles:
i) `3x+4y-5z=7` and `2x+6y+6z+7=0`
ii) `x-2y+4z=10` and `18x+17y+4z=49`

Show that the following planes are at right angle: x-2y+4z=10\ a n d\ 18 x+17 y+4z=49.

Show that the planes 2x+6y-6z=7\ a n d\ 3x+4y+5z=8 are at right angles.

Solve the following system matrix method: x-3y-8z=-10 and 3x+y-4z=0 and 2x+5y-6z=13

solve the following system of equations by matrix method: x-3y-8z=-10 and 3x+y-4z=0 and 2x+5y-6z=13

Show that the following system of equation is consistent.2x-y+3z=5,3x+2y-z=7,4x+5y-5z=0

Show that each of the following systems of linear equations is consistent and also find their solutions: 6x+4y=2 9x+6y=3 2x+3y=5 6x+9y=15 5x+3y+7z=4 3x+26 y+2z=9 7x+2y+10 z=5 x-y+z=3 2x+y-z=2 -x-2y+2z=1 x+y+z=6 x+2y+3z=14 x+4y+7z=30 2x+2y-2z=1 4x+4y-z=2 6x+6y+2z=3

Measure of angle between the planes 5x-2y + 3z-7=0 and 15x - 6y+9z+5=0 is

Find the angle between the plane: 2x+y-2z=5 and 3x-6y-2z=7

Find the angle between the plane: 3x-6y+2z=7 and 2x+2y-2z=5

Find the angle between the two planes 3x-6y+2z=7 and 2x+2y-2z=5