VectorEasy
Question
If 
are vectors such that 
= 0 and |
| = 7, |
| = 5, |
| = 3 then angle between vector and is
are vectors such that = 0 and || = 7, || = 5, || = 3 then angle between vector and isOptions
A.60o
B.30o
C.45o
D.90o
Solution
⇒ 2|
||
| cos θ = 49 - 34 = 15 ⇒ 2 × 5 × 3cos θ = 15 ⇒ cos θ = 1/2 ⇒ θ = 
= 600Create a free account to view solution
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