A shoreline observation post is located on a cliff such that the observer is 350 feet above sea level. The observer spots a ship approaching the shore and the ship is traveling at a constant speed. To input your angle measures in degrees, use the functions sind (5), cosd (5) and tand (5), instead of sin (5), cos (5) and tan (5). Angle of depression a. When the observer initially spots the ship, the angle of depression for the observer's vision is 5 degrees. At this point in time, how far is the ship from the shore? feet Preview b. After watching the ship for 47 seconds, the angle of depression for the observer's vision is 12 degrees. At this point in time, how far is the ship from the shore? feet Preview c. What is the ship's constant speed (in ft/sec)? ft/sec Preview

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A: Cos(B) = ?

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.