VectorEasy
Question
If 
and 
are unit vectors and θ is the acute angle between them, then 
is a unit vector for
and are unit vectors and θ is the acute angle between them, then is a unit vector forOptions
A.exactly two values of θ
B.more than two values of θ
C.no value of θ
D.exactly one value of θ
Solution
|
| = 1
sin θ =
Hence there is exactly one value of θ for which
is a unit vector.
| = 1sin θ =
Hence there is exactly one value of θ for which
is a unit vector.Create a free account to view solution
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