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Chapter 8: Q. 62 (page 536)
Write down your strategy for solving an oblique triangle.
Strategy for solving an oblique triangle.
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Rework Problem 8 under the same conditions except that, at time t = 0, the object is at its resting position and moving down.
Crankshafts on Cars On a certain automobile, the crankshaft is 3 inches long and the connecting rod is 9 inches long (see the figure). At the time when OPQ is 15°, how
far is the piston (P) from the center (O) of the crankshaft?
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°, and from the second sensor to the aircraft it is 15°. Determine how high the aircraft is at this time.
If three sides of a triangle are given, the Law of _________ is used to solve the triangle.
The displacement d (in meters) of an object at time t (in seconds) is given
(a) Describe the motion of the object.
(b) What is the maximum displacement from its resting position?
(c) What is the time required for one oscillation?
(d) What is the frequency?
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