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Mathematics
Mathematics
Problem
Let
a
=
4
i
^
+
5
j
^
+
6
k
^
\mathbf{a}=4\hat{i}+5\hat{j}+6\hat{k}
a
=
4
i
^
+
5
j
^
+
6
k
^
and
b
=
8
i
^
+
10
j
^
+
d
k
^
\mathbf{b}=8\hat{i}+10\hat{j}+d\hat{k}
b
=
8
i
^
+
10
j
^
+
d
k
^
. For which value of
d
d
d
is
b
\mathbf{b}
b
parallel to
a
\mathbf{a}
a
? a) 10 b) 12 c) 6 d) 14
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