let the right angle be at C.
You will have a 3-4-5 triangle at the given moment, when t=0.
Now, at any time t, later, what are the distances AC and BC?
Persons A and B are running toward a certain point C. A is east of C and running west at 8mph. B is south of the point and running north. When B is 4 miles from the square, A and B are 5 miles apart.
How fast is B running at this moment if the distance between A and B is decreasing at 10mph?
I understand that to set this question up,I should draw a picture that resembles a right triangle, with A, B, and C as the corners. I'm not sure how to solve
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