Math miscellaneousHard
Question
If |
| = 4, |
| = 2 and the angle between and is π/6 then 
= 2 is equal to
| = 4, || = 2 and the angle between and is π/6 then = 2 is equal toOptions
A.48
B.16
C.
D.none of these
Solution
We have, 
. 
= |||| cos 
= 4 × 2 × 
= 4√3.
Now,
+ 
= a2b2 ⇒ + 48 = 16 × 4 ⇒ = 16
. = |||| cos = 4 × 2 × = 4√3.Now,
+ = a2b2 ⇒ + 48 = 16 × 4 ⇒ = 16Create a free account to view solution
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