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How does a car rear view mirror help the driver see what is behind her?

A car's rear view mirror helps the driver see what is behind them by using a curved mirror to reflect light from the area behind the car. The mirror is usually located at the top center of the windshield and is angled in such a way that it reflects light from behind the car into the driver's eyes.

The curved shape of the mirror is what allows it to reflect light from a wide area behind the car. This means that the driver can see a much larger area behind them than they would be able to if they were simply looking out of the rear window of the car.

Rear view mirrors are an essential safety feature for cars, as they allow the driver to see what is behind them and make safe decisions when changing lanes or backing up.