Two vectors A⃗ and B⃗ are at right angles to each other. The magnitude of A⃗ is 5.00. What should be the length of B⃗ so that th
e magnitude of their vector sum is 9.00?
1 answer:
Answer:
Length of B is 7.4833
Step-by-step explanation:
The vector sum of A and B vectors in 2D is

And its magnitude is:

Where




Using the properties of the sum of two angles in the sin and cosine:


Sustituying in the magnitud of the sum




Solving for B


Sustituying the value of the magnitud of A


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I think the answer is 381
Answer:
x=7/4
Step-by-step explanation:
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= $356 - $50
= $306 / $17
= 18 months
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