(a)
To Show: The area is
(a)
Explanation of Solution
Given: An equilateral triangle has side of length of
In triangle
Now
Here two
In triangle
Now in triangle
Hence proved.
(b)
To Find: The area when
(b)
Answer to Problem 33WE
Explanation of Solution
Given: An equilateral triangle has side of length of
Area of triangle
Substitute
We get
Hence,
Chapter 11 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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- Elementary Geometry For College Students, 7eGeometryISBN:9781337614085Author:Alexander, Daniel C.; Koeberlein, Geralyn M.Publisher:Cengage,Elementary Geometry for College StudentsGeometryISBN:9781285195698Author:Daniel C. Alexander, Geralyn M. KoeberleinPublisher:Cengage Learning