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Chapter 8: Q. 9 (page 556)
Solve the triangle: for which side a is 20, side c is 15, and angle C is 40掳.
The unknown values of the triangle are
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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?
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?
Determine the domain of the function
Find the distance from A to C across the gorge illustrated in the figure.
A state trooper is hidden 30 feet from a highway. One second after a truck passes, the angle between the highway and the line of observation from the patrol car to the truck is measured. See the illustration.
(a) If the angle measures 15掳, how fast is the truck traveling? Express the answer in feet per second and in miles per hour.
(b) If the angle measures 20掳, how fast is the truck traveling? Express the answer in feet per second and in miles per hour.
(c) If the speed limit is 55 miles per hour and a speeding ticket is issued for speeds of 5 miles per hour or more over the limit, for what angles should the trooper issue a ticket?
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