Thursday, September 29, 2011

The notes from class:

Recap of the unit circle from Tuesday:

Finding values for sin, cos, & tan:









Knowing the quadrants and their associated +/- trig values:

* Remember the letter represents the trig function(s) that is/are positive in that quadrant.

In class questions on pg 279:





Rather than remembering a formula, let's understand what this actually means...

Red represents positive trig values and blue negative trig values.




Equations for Quiz #1:


The Ambiguous Case:

-A situation in which you are given the value of two sides, but not the angle that joins them. Thus, the unknown side can have two values depending on how it is drawn.

Tuesday, September 27, 2011

Here are today's notes:

Thursday's homework questions revisited:



A Quick Refresher on Co-ordinate Geometry:

The Unit Circle:

Notice that the distance from the center of the circle to the circumference is always 1 unit. Regardless of the angle, the distance from the vertex (0,0) to the point P (x,y) will always be 1 unit.


Solving angles requires creating an right-angled triangle within the unit circle. The value of 'x' denotes the length of the horizontal side and the value of 'y' denotes the length of the vertical side of the triangle. *Remember to use the absolute value (positive) for the sides of the triangle.


Standard Position Angles:



In class work:


The development of an expression to calculate coterminals of a given standard position angle:


How to Find Co-ordinates of P for Angles in Standard Position:


Using Trigonometry to Represent the Angles in Standard Position:



Please complete the chart below (remember an 'err' on your calculator represents and undefined function):


To Determine the number of rotations:

The Votes Are In...

Your coursework will be divided into:

Assignments: 13%
Portfolio: 12%
Quizzes: 25%
Tests: 20%
Exams: 30%

Thursday, September 22, 2011

Here are today's notes:

Review of material covered on Tuesday 20th:

Please consult pg: 246 #1a, 2a





In class practice of trigonometry concepts covered on Tuesday 20th:



Introducing: The Sine Law


Introducing: The Cosine Law

HOMEWORK:

Sine Law: pg 249: #1, 3, 5, 6 parts a & c for all questions

Cosine Law: pg 252: #1, 3, 5, 6 parts a & c for all questions

Hello MCR3U-01!

It was great to meet last Tuesday night. I look forward to a challenging, yet rewarding semester working together.

Just a reminder that classes are Tuesdays & Thursdays 6-9pm in room 17 at the Barrie Learning Centre. Your punctuality is essential.

Please free to approach me with any questions you may have,
Miss K Jeffrey