the vector 5^i+2^j-1^k is perpendicular to the perpendicular to the vector 3i^j^+2k^ from 1=
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Explanation:
Correct option is D)
(5
i
^
+2
j
^
−l
k
^
).(3
i
^
+
j
^
+2
k
^
)=0
∴
A
⊥
B
= then
A
.
B
=0
=15+2−2l=0
=17−2l=0
2
17
=l
l=8.5
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