Question

Angle between 2i + 2j - k and 6i - 3j + 2k is

Answer 1

heya!!

Let the angle between them is x°

Cos ( x° ) = A . B / |A| × |B|


A.B = 4

|A| = 3 and |B| = 7

Cos ( # ) = 4 / 21

# = arcCos( 4 / 21 )