A bridge is built in the shape of a semielliptical arch. It has a span of 104 feet. The height of the arch 25 feet from the cent
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Answer:
Step-by-step explanation:
The magnitude of a vector v = ai + bk is
In this problem, we have that:
Find a vector of magnitude 3 in the direction of v=4i-3k:
The first step is finding the unit vector of v, .
So
Magnitude 3, same direction.
We multiply the unit vector by +3, since it is in the same direction. If it was in the opposite direction, we would have multiplied by -3.
The answer is: