If a and b are unit vectors and θ is the angle between them, then prove that

cos θ/2 = ½ |a+b|

In this problem, it is given that the magnitude of unit vectors are unity.
Calculate the resultant of tese given vectors, as R = a + b
Find its magnitude and calculate mathematically...You will get the required result..........................................
Good Luck......................

In this problem, it is given that the magnitude of unit vectors are unity. Calculate the resultant of tese given vectors, as R = a + b Find its magnitude and calculate mathematically...You will get the required result.......................................... Good Luck......................