Let a = i + 2j -2k and b = 2i - j - 2k be two vectors. If the orthogonal projection vector of a on b is x and orthogonal projection vector of b on a is y then |x - y| =
In a triangle BC, if the mid points of sides AB, BC, CA are (3,0,0), (0,4,0),(0,0,5) respectively, then AB2 + BC2 + CA2 =
If the line ax+by+c=0 is a normal to the curve xy=1, then
The number of solutions of tanx+secx=2cosx, n(0,2π) are?
The differential equation dy/dx=√1-y2/y determines a family of circles with
If nCr denotes the number of combinations of n distinct things taken r at a time, then the domain of the function g (x)= (16-x)C(2x-1) is