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Answered by
1
Step-by-step explanation:
Note: Two vectors are perpendicular if their dot product is 0.
Given vectors are :
a = 3i + 5j - 7k.
b = 7i + 3k
So,
a.b = (3i + 5j - 7k).(7i + 3k)
= 3 * 7 - 7 * 3
= 21 - 21
= 0.
Therefore, the two vectors are perpendicular to each other.
Hope it helps!
Answered by
1
a.b = (3i + 5j - 7k).(7i + 3k)
= 3 * 7 - 7 * 3
= 21 - 21
= 0.
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