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Chapter 8: Q. 12 (page 535)
Solve the triangle
The solution is
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A person in a small boat, offshore from a vertical cliff known to be feet in height, takes a sighting of the top of the cliff. If the angle of elevation is found to be, how far offshore is the boat?
Find the area of the triangle. Round answer to two decimal places.
Find the area of the triangle. Round answer to two decimal places.
Determining the Height of an Aircraft Two sensors are spaced 700 feet apart along the approach to a small airport. When an aircraft is nearing the airport, the angle of elevation from the first sensor to the aircraft is 20掳, and from the second sensor to the aircraft it is 15掳. Determine how high the aircraft is at this time.
an object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up:
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