By Whitney Traynham
Trigonometry
is a
mathematical study of
triangles
History
shows that people as
early as Ancient Egyptians
used Trigonometry, but the
study was built upon and
molded over hundreds of
years.
 Though
no one person is responsible for the
study of Trigonometry, Hipparchus of Nicea,
is known as the father of trigonometry.
 He was a Greek man living during 190 & 120
B.C.
 He is known as the Father of Trigonometry be
cause “He developed trigonometry and
constructed trigonometric tables, and he
solved several problems of spherical
trigonometry.
"Hipparchus." Wikipedia. Wikimedia Foundation, 31 Aug. 2012. Web.
04 Sept. 2012. http://en.wikipedia.org/wiki/Hipparchus
 Trigonometry
can be used to find
elevation. For example is you wanted to
know how high above sea level you were,
you could use a trigonometric formula.
 Similarly
trigonometry can be used to find
the height of buildings or mountains.
"FASCINATING FACTS OF MATHEMATICS." : Applications of Trigonometry
in Real Life. N.p., n.d. Web. 04 Sept. 2012. http://malinimath.blogspot.com/2011/08/applications-of-trigonometry-inreal.html
Trigonometry
is used in
architecture, such as in a music
hall, because the sound wave
travel in angles certain designs
create better sound
production.
Thibodeaux, Wanda. "How Is Trigonometry Used in Music?" EHow.
Demand Media, 30 Apr. 2009. Web. 04 Sept. 2012.
http://www.ehow.com/how-does_4969029_howtrigonometry-used-music.html
Trigonometry
is used in
digital imaging to create
vivid, lifelike images.
"FASCINATING FACTS OF MATHEMATICS." : Applications of Trigonometry
in Real Life. N.p., n.d. Web. 04 Sept. 2012. http://malinimath.blogspot.com/2011/08/applications-of-trigonometry-inreal.html
Sine
opp/hyp
Cosine
adj/hyp
Tangent
opp/adj
cosecant
hyp/opp
secant
hyp/adj
cotangent
adj/opp
The
first slide of ratios shows
the normal used of the
functions, while the second slide
shows the reciprocals of the
regular functions.
Stapel, Elizabeth. "Basic Trigonometric Ratios." Purplemath.
Available from
http://www.purplemath.com/modules/basirati.htm
 The
regular functions are also used in
geometry.
http://www.purplemath.com/modules/basirati.htm
I
think this website would be a great
study tool.
http://www.ehow.com/info_8674543_ideas-trigprojects.html
 This website may provide simple ideas for projects
we could do in class.
A
unit circle has a radius of one.
The
unit circle is used in
trigonometry with this formula “The
unit circle equation is x² + y² = 1”
Stapel, Elizabeth. "The Unit Circle." Purplemath. Available from
http://www.purplemath.com/modules/unitcirc.htm
Circles
and triangles have
the same tangent which
relates them.