The resultant of u and V is perpendicular
to u and has a magnitude equal to half of
the magnitude of v. The angle between
u &v is
n
(A) 120°
(B) 150°
(C) 90°
(D) 60°
Answers
Answered by
1
Answer:
150 I think is the angle
Answered by
1
Answer
Correct option is
A
150
∘
According to question:
(
u
+
v
).
u
=0 and
∣
∣
∣
u
+
v
∣
∣
∣
=
2
v
⇒u
2
+
u
.
v
=0 & u
2
+v
2
+2
u
.
v
=
4
v
2
⇒
4
3
v
2
=u
2
→cosθ=−
2
3
⇒θ=150
∘
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