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Please explain and solve : from a lighthouse deck 90 ft above the water, a capsized boat is observed at an angle of depression of

Please explain and solve : from a lighthouse deck 90 ft above the water, a capsized boat is observed at an angle of depression of 7 degrees. How far is the boat from the base of the lighthouse? We are using sin cos and tan and this is 10th grade enriched geometry. Thank you!

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