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You are at the top of a lighthouse that is located 30 m above the water....

You are at the top of a lighthouse that is located 30 m above the water. You spot a boat out on the water approaching you at a constant speed. At one moment, the boat is located at an angle of 30° below the horizon. One minute later, the boat is located at an angle of 40° below the horizon.

1. How far was the boat from the base of the lighthouse when it was at 30°? How about 40°? How far did the boat travel over that one minute?

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Distance travelled by boat in 1 minute-

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