Alex Lopez Jan. 19, 2011

• The Unit Circle is your life saver to understanding trig functions of special angles!!

^^Above Are Examples of Special Angles!!

• Ever wondered how ocean waves look like from the side? Just look at the Sine, Cosine, and Tangent functions!!

• Sine Function:

• Domain: all real numbers• Range: [-1 , 1]• Period = 2pi• x intercepts: x = k pi , where k

is an integer.• y intercepts: y = 0

• Cosine Function:

• Domain: all real numbers• Range: [-1 , 1]• Period = 2pi• x intercepts: x = pi/2 + k pi , where k is an

integer.• y intercepts: y = 1

• Domain: all real numbers except pi/2 + k pi, k is an integer.

• Range: all real numbers• Period = pi• x intercepts: x = k pi , where k is an integer.• y intercepts: y = 0

• Tangent Function:

• Ahhhh….going back to the usage of Alg. 2 ! Seems hard at first but becomes really easy once you get the hang of it!!

• Few formulas needed to simplify functions!!:

Reciprocal Identities Pythagorean Identities

Unit 4: Solving Trig Functions Unit 4: Solving Trig Functions

This is where your knowledge of previous units will help you solve these equations!!!

*must go to presentation mode to watch video*

Unit 5: Trig Applications!Unit 5: Trig Applications!

This is really fun especially when you can apply these to real life using angle of depression and elevation and right triangles!

When solving for a triangle, there are four cases:-SAA or ASA: one side and two angles are known-SSA: two sides and an angle (not the included one) are known-SAS: two sides and the included angle are known-SSS: three sides are known