Module 5: Lesson 3

 

Self-Check 2

1. “Your Turn” from “Example 2” on page 294 of the textbook
   1. For the expression the non-permissible values will occur when tan x = 0, when tan x is undefined, and when sec x is undefined.
      
      
       
      tan x = 0 at {x = nπ, n ∈ I, x ∈ R}
      
      
       
      tan x is undefined at .
      
      
       
      sec x is undefined at .
      
      When the two sets of restrictions are put together, the resulting set of restrictions is
   2. The expression can be simplified in more than one way. One possible method is shown.
      
      
       
      

© 2012 Alberta Education