(Answered) Youve dropped your car keys at night off the end of a dock

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You've dropped your car keys at night off the end of a dock into water 1.6 m deep. A flashlight held directly above the dock edge and 0.50 m above the water illuminates the keys when it's pointed at 400 to the vertical, as shown in the figure.

368_What is the horizontal distance.png

What is the horizontal distance x from the edge of the dock to the keys?

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