Friday, September 25, 2009
Graphs of Trig Functions
Today we learned about graphing trig functions. First we learned how to graph them then we found out the domain(side to side), range(up and down), the zeros, the period(how many times the circle repeats or on a graph, horozontally.or 2pie.) and amplitude( the measure from the x axis to the top of the curve).The graphs for cosine and sine are the same except for the cosine graph is shifted over and the tangent is way different because its equation is y/x. I understood the concept.
Thursday, September 24, 2009
Wednesday, September 23, 2009
Monday, September 21, 2009
Solving Trig Equations
Today we did some more trig equation examples from an acceleration math sheet. I understood how to evaluate the questions. I leaned that the 30, 60, 90 triangle is always on the outside values on the unit circles and the 45,45,90 triangles are aways on the values in the middle. For example 45 degrees is a 45, 45, 90 triangle and the two surrounding values, 60 and 30 are 30, 60, 90 triangles. First eight questions on exercise 4 are due.
Friday, September 18, 2009
Solving Trig Equations
We did an example for solving trig equations today. I wasn't sure about it but towards the end I started to understand. I need to look at the recording this weekend. Look at pages 66 to 80 in the green book.
Thursday, September 17, 2009
Today we learned about Trig Functions.........I sort of get how to complete the chart but I need to work on it to get it drilled into my head. We did an example that clarified it a bit but I need to practice some more questions. I am understanding cosecant, cotangent, and secant a little better now. Try Exercise 3 and complete chart.
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