Chapter 4: Problem 34
Find (if possible) the complement and supplement of each angle. (a) 3 (b) 1.5
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Chapter 4: Problem 34
Find (if possible) the complement and supplement of each angle. (a) 3 (b) 1.5
These are the key concepts you need to understand to accurately answer the question.
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For a person at rest, the velocity \(v\) (in liters per second) of airflow during a respiratory cycle (the time from the beginning of one breath to the beginning of the next) is given by \(v=0.85 \sin \frac{\pi t}{3},\) where \(t\) is the time (in seconds). (Inhalation occurs when \(v>0,\) and exhalation occurs when \(v<0 .\) ) (a) Find the time for one full respiratory cycle. (b) Find the number of cycles per minute. (c) Sketch the graph of the velocity function.
An airplane, flying at an altitude of 6 miles, is on a flight path that passes directly over an observer (see figure). If \(\theta\) is the angle of elevation from the observer to the plane, find the distance \(d\) from the observer to the plane when (a) \(\theta=30^{\circ}\), (b) \(\theta=90^{\circ}\), and \((\mathrm{c}) \theta=120^{\circ}\).
Convert each angle measure to degrees, minutes, and seconds without using a calculator. Then check your answers using a calculator. (a) \(2.5^{\circ}\) (b) \(-3.58^{\circ}\)
The radii of the pedal sprocket, the wheel sprocket, and the wheel of the bicycle in the figure are 4 inches, 2 inches, and 14 inches, respectively. A cyclist is pedaling at a rate of 1 revolution per second. (a) Find the speed of the bicycle in feet per second and miles per hour. (b) Use your result from part (a) to write a function for the distance \(d\) (in miles) a cyclist travels in terms of the number \(n\) of revolutions of the pedal sprocket. (c) Write a function for the distance \(d\) (in miles) a cyclist travels in terms of the time \(t\) (in seconds). Compare this function with the function from part (b). (d) Classify the types of functions you found in parts (b) and (c). Explain your reasoning.
Use a graphing utility to graph the function given by \(y=d+a \sin (b x-c),\) for several different values of \(a, b, c,\) and \(d\). Write a paragraph describing the changes in the graph corresponding to changes in each constant.
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