If l, m, n are the direction cosines of a position vector \(\vec{a}\), then which of the following is true?
Posted: Wed Jul 13, 2022 8:08 pm
a) l2+m2-n2=0
b) lmn=1
c) l2+m2+n2=1
d) l2 m2+n2=1
b) lmn=1
c) l2+m2+n2=1
d) l2 m2+n2=1
Accurate answers. Every time.
https://answerhappy.com/