1
2
3
4
0
30
60
90
The value of is
-1
Find the angle θ between the vectors
sin-1(1/3)
sin-1(-1/3)
cos-1(1/3)
cos-1(-1/3)
π/3
π/6
π/4
π/2
If G is the centroid of a Δ ABC, then GA + GB + GC =
√3
√5
√2
16
8
12
-25
25
20
5
6
