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This site helps students to understand.
It gives the definitions and examples of each area.
The site also gives students different ways to remember the basic trigonometric functions.
http://edtech2.boisestate.edu/millerl/506/final_project/graphic_organizer.html
Pythagoras is known as the first pure mathematician.
He is best known for his contribution to mathematics through the Pythagorean identity i.e. a²+b²=c²
http://mathopenref.com/pythagoras.html
This site gives 10 reasons why trigonometry is important in everyday life.
Some include:
The use of a GPS system!
Music: the sound waves!
CAT and MRI scans!
http://www.mathworksheetscenter.com.com/mathtips/trigonometry.html
A sinusoidal function is a function that is like a sine function in the sense that the function can be produced by shifting, stretching or compressing the sine function.
A sinusoid is a mathematical function that describes a smooth repetitive oscillation.
The site shows and explains different ways to model sinusoidal functions.
http://wwwmathdemos.org/mathdemos/sinusoidapp/sinusoidapp.html
This website features different sets of flash cards for different subjects in trigonometry.
Including, but not limited to:
Radians and degrees
The unit circle
Trigonometry functions
http://quizlet.com/subject/trigonometry/