# A tourist at scenic Point Loma, California uses a telescope to track a boat approaching the shore. If the boat moves at a rate of

###### Question:

A tourist at scenic Point Loma, California uses a telescope to track a boat approaching the shore. If the boat moves at a rate of 15 meters per second, and the lens of the telescope is 50 meters above water level, how fast is the angle of depression of the telescope (θ) changing when the boat is 190 meters from shore? Round any intermediate calculations to no less than six decimal places, and round your final answer to four decimal places.

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What is the value of this question ? please help $What is the value of this question ? please help$...

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The total number of grams of O2 needed to produce 45 grams of water is... $The total number of grams of O2 needed to produce 45 grams of water is...$...