Question

If a = 2m + n,b= m - 2n , Angle between the unit vectors m and n is 60'. a,b are the sides of parallelogram, then the lengths of the diagonals are 1) √7.55 2 √13,55 3 1,413 4) √11, /13 If the vectors i-28-3vk and i + 3x1-2 vk are orthogonal to each other,then the locus of the point​

Answer 1

the atomic number of planets are the size and size and size and shape that a planet has in the world