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Byju's Answer
Standard XIII
Physics
Vector Component
If A = 4î - 2...
Question
If
→
A
=
4
^
i
−
2
^
j
+
6
^
k
and
→
B
=
^
i
−
2
^
j
−
3
^
k
the angle which
→
A
−
→
B
makes with x-axis is
A
cos
−
1
(
1
10
)
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B
cos
−
1
(
2
√
10
)
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C
cos
−
1
(
1
√
10
)
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D
cos
−
1
(
1
5
)
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Solution
The correct option is
C
cos
−
1
(
1
√
10
)
→
A
=
4
^
i
−
2
^
j
+
6
^
k
&
→
B
=
^
i
−
2
^
j
−
3
^
k
→
A
−
→
B
=
3
^
i
+
9
^
k
Let x - axis =
^
i
cos
θ
=
(
3
^
i
+
9
^
k
)
.
(
^
i
)
√
3
2
+
9
2
cos
θ
=
3
√
90
θ
=
cos
−
1
1
√
10
Suggest Corrections
1
Similar questions
Q.
If
→
A
=
4
^
i
−
2
^
j
+
6
^
k
and
→
B
=
^
i
−
2
^
j
−
3
^
k
the angle which
→
A
−
→
B
makes with x-axis is
Q.
If
→
A
=
4
^
i
−
2
^
j
+
6
^
k
and
→
B
=
^
i
−
2
^
j
−
3
^
k
, the angle which the
→
A
−
→
B
vector makes with x-axis is
Q.
If
→
A
=
4
^
i
−
2
^
j
+
6
^
k
and
→
B
=
^
i
−
2
^
j
−
3
^
k
the angle which
→
A
−
→
B
makes with x-axis is
Q.
If
→
A
=
4
^
i
−
2
^
j
+
6
^
k
and
→
B
=
^
i
−
2
^
j
−
3
^
k
, the angle which the
→
A
−
→
B
vector makes with x-axis is
Q.
Given two vectors
→
A
=
^
i
−
2
^
j
−
3
^
k
and
→
B
=
4
^
i
−
2
^
j
+
6
^
k
, the angle made by
(
→
A
+
→
B
)
with x-axis is:
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