1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Mathematics
Dot Product of Two Vectors
If b×c×c×a=3c...
Question
If
(
→
b
×
→
c
)
×
(
→
c
×
→
a
)
=
3
→
c
,
then
[
→
b
×
→
c
→
c
×
→
a
→
a
×
→
b
]
is equal to
Open in App
Solution
Given :
(
→
b
×
→
c
)
×
(
→
c
×
→
a
)
=
3
→
c
⇒
[
→
b
→
c
→
a
]
→
c
−
[
→
b
→
c
→
c
]
→
a
=
3
→
c
⇒
[
→
b
→
c
→
a
]
→
c
−
→
0
=
3
→
c
⇒
[
→
b
→
c
→
a
]
=
3
⋯
(
i
)
Now,
[
→
b
×
→
c
→
c
×
→
a
→
a
×
→
b
]
=
(
→
a
×
→
b
)
⋅
{
(
→
b
×
→
c
)
×
(
→
c
×
→
a
)
}
=
(
→
a
×
→
b
)
⋅
3
→
c
=
3
[
→
a
→
b
→
c
]
=
9
(from
(
i
)
)
Suggest Corrections
0
Similar questions
Q.
If
n
∑
r
=
1
n
C
r
3
r
is equal to
4095
then
n
equals.
Q.
If
then x is equal to