SOLUTION: sec²θ-2=0, -π<θ<π

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Question 1203975: sec²θ-2=0, -π<θ<π
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

,



solutions:


or


general solutions:
, element
, element

solutions in given interval
=> ,
=>,

combine solutions
,,,


Answer by ikleyn(52910)   (Show Source): You can put this solution on YOUR website!
.

In the post by @MathLover1, part of her solution (part of her writing) is incorrect.
In my post, I deleted/removed incorrect parts of her solution and saved only that lines that are correct. 


    ,  

     = 2.

     = +/- 


Solutions in given interval  <  < 

     =  ==>   =   or   = .

     =  ==>   =   or   = .


ANSWER.   = , , , .



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