A vector is represented by 3^i+^j+2^k. Its length in XY plane is
2
√14
√10
√5
→R=3^i+^j+2^k ∴ Length in XY plane =√R2x+R2y=√32+12=√10
A vector is represented by 3i^+j^+2k^. It's length in X-Y plane will be?
Option:
a)2
b)rt14
c)rt10
d)rt5