February 10


section covered in text
Appendix C.  Trigonometry (continued)

objective
to review basic facts of trigonometry

key ideas and/or vocabulary
radians, arc length, even and odd functions, trigonometric identities (especially the addition formulas), inverse trigonometric functions, composition of trigonometric functions, solving trigonometric equations and inequalities, laws of cosine and sine

Know how to use the calculator to help solve trigonometric equations, inequalities and how to find the domain of the inverse trigonometric functions

solved problems - using key ideas
graphs of trigonometric functions
#24,25. proving basic identities
#31.  solving trigonometric equations
#36.  solving trigonometric inequalities
#37-40.  using transformations of trigonometric functions
#41,43. composition of trig functions and their inverses
#50.  law of cosines in an application
#53.  proving a basic identity
 

group work
Use your graphing calculator to find the solutions to the equation sin(x) = .25x + .25.

announcements
Homework.  #14,30,36,42,48
 
 
 
 
 
 
 
 
 
 
QUESTION OF THE DAY
Find an equation for the hyperbola from which the center and asymptotes can be easily found.  Graph the hyperbola to confirm your result.
x2 - 16y2 - 4x - 96y =  156
  SOLUTION

 

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SOLUTION. 
The center is (2,3) and the asymptotes are y - 3 = ±.25(x-2).

 
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