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Byju's Answer
Standard XII
Mathematics
Applications of Cross Product
Find the angl...
Question
Find the angle between the vectors with direction ratio prop to
4
,
−
3
,
1
and
3
,
4
,
5
.
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Solution
Angle will be defined as
cos
θ
=
4
(
3
)
−
3
(
4
)
+
1
(
5
)
√
4
2
+
(
−
3
)
2
+
1
2
×
√
3
2
+
4
2
+
5
2
=
5
10
√
13
=
1
2
√
13
θ
=
cos
−
(
1
2
√
13
)
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