0
30
60
90
The projection of the vector is
5/√3
10/√6
5/√6
10/√3
1
2
3
4
180o
90o
0o
45o
25
-25
20
π/3
π/6
π/4
π/2
Find the angle θ between the vectors
sin-1(1/3)
sin-1(-1/3)
cos-1(1/3)
cos-1(-1/3)
If the position vectors of A and B are
√14
√29
√43
√53
