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Chapter 8: Q. 23 (page 535)
Solve each triangle.
The solution is.
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Solve each triangle.
The hypotenuse of a right triangle is 5 inches. If one leg is 2 inches, find the degree measure of each angle.
Great Pyramid of Cheops One of the original Seven Wonders of the World, the Great Pyramid of Cheops was built about 2580 bc. Its original height was 480 feet 11 inches,
but owing to the loss of its topmost stones, it is now shorter. Find the current height of the Great Pyramid using the information given in the illustration.
The displacement d (in meters) of an object at time t (in seconds) is given as
(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?
Time Lost due to a Navigation Error In attempting to fly from city P to city Q, an aircraft followed a course that was 10掳 in error, as indicated in the figure. After flying a distance
of 50 miles, the pilot corrected the course by turning at point R and flying 70 miles farther. If the constant speed of the aircraft was 250 miles per hour, how much time was lost due
to the error?
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