This module explains the law of sines and the law of cosines. It also explains vector solutions for coplanar forces that are concurrent at a point in a format that is accessible to blind students.
Table of contents
Preface
General
This module is part of a collection of modules designed to make physics
concepts accessible to blind students.
If you opened this page in the context of the book, a Table of Contents for
the book (or collection) should be available above and to the left of thisparagraph. Otherwise, click
here to open the book at the beginning.
This book is intended to supplement but not to replace the textbook in an
introductory high school or college physics course.
This module explains the law of sines and the law of cosines. It also
explains vector solutions for coplanar forces that are concurrent at a point ina format that is accessible to blind students.
Prerequisites
In addition to an Internet connection and a browser, you will need the
following tools (as a minimum) to work through the exercises in these modules:
- A graph board for plotting graphs and vector diagrams (
(External Link) ).
- A protractor for measuring angles (
(External Link) ).
- An audio screen reader that is compatible with your operating system,
such as the NonVisual Desktop Access program (NVDA), which is freelyavailable at
(External Link) .
- A refreshable Braille display capable of providing a line by line tactile output of information displayed on the computer monitor
(
(External Link) ).
- A device to create Braille labels. Will be used to label graphs
constructed on the graph board.
- The ability to create tactile graphics as described
here .
The minimum prerequisites for understanding the material in these modules
include:
- A good understanding of algebra.
- An understanding of the use of a graph board for plotting graphs and
vector diagrams (
(External Link) ).
- An understanding of the use of a protractor for measuring angles (
(External Link) ).
- A basic understanding of the use of sine, cosine, and tangent from
trigonometry (
(External Link) ).
- An introductory understanding of JavaScript programming (
(External Link) and
(External Link) ).
- An understanding of all of the material covered in the earlier modules
in this collection.
- An understanding of the creation and use of tactile graphics as
described
here .
Viewing tip
I recommend that you open another copy of this document in a separate
browser window and use the following links to easily find and view the figuresand listings while you are reading about them.
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Figure 1 . Mirror image from the file named Phy1100a1.svg.
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Figure 2 . Non-mirror-image version of the image from the file named Phy1100a1.svg.
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Figure 3 . Key-value pairs for the image in the file named Phy1100a1.svg.
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Figure 4 . Mirror image contained in the file named Phy1100b1.svg.
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Figure 5 . Non-mirror-image version of the image
from the file named Phy1100b1.svg.
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Figure 6 . Key-value pairs for the image in the file named Phy1100b1.svg.
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Figure 7 . Mirror image from the file named Phy1100c1.svg.
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Figure 8 . Non-mirror-image version of the image from the file named Phy1100c1.svg.
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Figure 9 . Key-value pairs for the image in the file named Phy1100c1.svg.
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Figure 10 . Mirror image from the file named Phy1100d1.svg.
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Figure 11 . Non-mirror-image version of the image from the file named Phy1100d1.svg.
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Figure 12 . Key-value pairs for the image in the file named Phy1100d1.svg.
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Figure 13 . Mirror image from the file named Phy1100e1.svg.
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Figure 14 . Non-mirror-image version of the image from the file named Phy1100e1.svg.
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Figure 15 . Key-value pairs for the image in the file named Phy1100e1.svg.
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Figure 16 . Screen output for Listing #1.
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Figure 17 . Changes to Listing #1.
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Figure 18 . Screen output for modified Listing #1.
