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CBSE Class 12 Math 2023 Delhi Set 1 Solved Paper
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© examsnet.com
Question : 13
Total: 38
Two vectors
→
a
=
a
1
^
i
+
a
2
^
j
+
a
3
^
k
and
→
b
=
b
1
^
i
+
b
2
^
j
+
b
3
^
k
are collinear if
a
1
b
1
+
a
2
b
2
+
a
3
b
3
=
0
a
1
b
1
=
a
2
b
2
=
a
3
b
3
a
1
=
b
1
,
a
2
=
b
2
,
a
3
=
b
3
a
1
+
a
2
+
a
3
=
b
1
+
b
2
+
b
3
Solution:
👈: Video Solution
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