8th Edition

ISBN: 9781337798310

Author: Peterson, John.

Publisher: Cengage Learning,

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A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.

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Textbook Question

Chapter 66, Problem 87A

Determine the value of angle A in decimal degrees for each of the given functions. Round the answers to the nearest hundredth of a degree.
sec A = 1.58732

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Chapter 66, Problem 86A

Chapter 66, Problem 88A

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Function: y=xsinx Interval: [ 0 ; π ] Requirements: Draw the graphical form of the function. Show the coordinate axes (x and y). Choose the scale yourself and show it in the flowchart. Create a flowchart based on the algorithm. Write the program code in Python. Additional requirements: Each stage must be clearly shown in the flowchart. The program must plot the graph and save it in PNG format. Write the code in a modular way (functions and main section should be separate). Expected results: The graph of y=xsinx will be plotted in the interval [ 0 ; π ]. The algorithm and flowchart will be understandable and complete. When you test the code, a graph file in PNG format will be created.

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Chapter 66 Solutions

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Determine the value of angle A in decimal degrees for each of the given functions. Round the answers to the nearest hundredth of a degree. sec A = 1.58732

Solution Summary: The author explains the value of angle A in decimal degree, which is 50.95°.

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