Mark the correct alternative in each of the following:
If the angle between the vectors 
is acute, then x lies in the interval.
=
If the angle is acute 
<0
(
+3
).(
)<0
⟹ x2-3x-28<0
(x-7) (x+4)<0
x
R-(4,7) Ans.
1
Mark the correct alternative in each of the following:
If the angle between the vectors is acute, then x lies in the interval.
=
If the angle is acute
<0
(+3).()<0
⟹ x2-3x-28<0
(x-7) (x+4)<0
xR-(4,7) Ans.