If ā and b bar are two vectors such that |ā×b|=2 theb find the value of [ ā b bar ā×b bar].
hey guys please answer my question and i am not having b bar option as ā so try to understand please give correct answer please
I will mark you as a brainliest!!☆
Answers
Answered by
10
Answer:
Given ∣
a
∣=2∣
b
∣=2&
a
.
b
=4
Taking square
∣
a
−
b
∣
2
=(
a
−
b
).(
a
−
b
)
=
a
.
a
−
a
.
b
−
b
.
a
+
b
.
b
=
a
.
a
−
a
.
b
−
a
.
b
+
b
.
b
=
a
.
a
−2
a
.
b
+
b
.
b
=∣
a
∣
2
−2
a
.
b
+∣
b
∣
2
=2
2
−2×4+3
2
=4−8+9
=5
So, ∣
a
−
b
∣
2
=5
∣
a
−
b
∣=±
5
Answered by
6
Answer:
Refer the attachment ❤️❤️☺️☺️✌️✌️
Attachments:
Similar questions