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Rate of Change for Radio Transmitter

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Problem: A radio transmitter is located 3 km away from a straight highway. A truck is traveling away from the transmitter along the highway at a speed of 80 km per hour. How fast is the distance between the truck and the transmitter increasing when they are 5 km apart?

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Solution Summary

Pythagorean formula is contextualized.

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Solution:

We'll first use a diagram to have an idea of what the problem is all about:

Since the problem forms a right triangle, we'll ...

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