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Writing Assignment for 6.1
In this section, you have been using the Law of Sines to solve oblique triangles. Can the
Law of Sines also be used to solve right triangles? If so, write a short paragraph
explaining how to use the Law of Sines to solve each below. Is there and easier way to
solve these triangles?
a.) B = 50
o
, C = 90
o
, c = 20 (AAS)
Yes, the Law of Sines can be used to solve right triangles. Although the law of
Sines is mainly used for oblique triangles, law of Sines can also be used to solve right
triangles even though the “SOHCAHTOA” method is easier and more preferable. In
explanation to why one can use the Law of Sines is that in order to find the side of b, one
uses sine of 50 times 20 divided by sine of 90 gives you the answer. This is the same
answer one would get if they were to use “SOHCAHTOA”. There is an easy way to solve
these triangles with the simple “SOHCAHTOA” expressions. In this particular situation,
one can use the sine equation (sine equals opposite over hypotenuse) to solve this
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This note was uploaded on 04/20/2011 for the course HIST 2312 taught by Professor Staff during the Spring '08 term at HCCS.
 Spring '08
 Staff

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