Trigonometry Project

By: Brittany Easter

Thursday:

What is Trigonometry?

Trigonometry- a branch of mathematics that studies triangles and the relationships between their sides and the angles between these sides.

When/where did trig originate?

Ancient Greece Hipparchus Angles = 360 degrees Cosine and Sine

Ex. 1:

Trigonometry is commonly used in finding the height of towers and mountains.

Ex. 2:

It is used in finding the distance between celestial bodies

Ex. 3:

http://www.youtube.com/watch?v=jhakDu-YTEg&feature=colike

Ex. 4:

Three Most Used Trig Functions and Their Ratios:

Sine:opposite/hypotenuse

Cosine: adjacent/hypotenuse

Tangent: opposite/adjacent

Interesting Website(s):

http://www.mathsisfun.com/geometry/unit-circle.html

Trig Project Idea:

Create a “Math Help” web site (must be educational and appropriate, possible use in the future by your instructor is ideal and desired, videos, interactive applets, etc suggested)*

My idea for this is that we create a website that students can go to and use for future homework help on math problems. The website doesn't have to be all about trigonometry help, it can be about other math problems, but I thought it would be neat if everyone participated in creating a website for this.

The Unit Circle:

What is it A unit circle is a circle with a radius of one. How and why is it used in trigonometry? The center is put on a graph where the x axis

and y axis cross, so we get this neat arrangement here.

Are circles and triangles related? In a way, yes.

http://www.youtube.com/watch?v=ao4EJzNWmK8&feature=colike

Works Cited:

http://en.wikipedia.org/wiki/Trigonometry http://malini-math.blogspot.com/2011/08/applications-of-trigonome

try-in-real.html http://www.youtube.com/watch?v=jhakDu-YTEg&feature=colike http://htends2infinity.files.wordpress.com/2008/09/trig-crater.jpg https://sites.google.com/a/jeffcoschools.us/awhonorsprecalc/

videosnotes/unit-5---trigonometry/trig-project http://en.wikipedia.org/wiki/Unit_circle http://www.mathsisfun.com/geometry/unit-circle.html http://www.youtube.com/watch?v=ao4EJzNWmK8&feature=colike