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MHTCET 13 May 2023 Shift 1 Solved Paper
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© examsnet.com
Question : 83
Total: 150
If
a
=
2
^
i
+
3
^
j
−
4
^
k
and
b
=
^
i
−
^
j
−
^
k
, then the projection of
b
in the direction of
a
is
1
√
29
2
√
3
5
√
3
3
√
29
Validate
Solution:
Projection of
b
in the direction of
a
=
a
⋅
b
|
a
|
=
(
2
^
i
+
3
^
j
−
4
^
k
)
⋅
(
^
i
−
^
j
−
^
k
)
√
2
2
+
3
2
+
(
−
4
)
2
=
2
−
3
+
4
√
4
+
9
+
16
=
3
√
29
© examsnet.com
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