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avatar+315 

Trig

 Apr 24, 2019
 #1
avatar+106539 
+2

sec  is positive in quads 1  and 4

 

tan is negative in quads 2 and 4

 

So....the intersection of these is quad 4   =  270° < x < 360°

 

 

cool cool cool

 Apr 24, 2019
 #2
avatar+315 
+1

Thank you! smiley

Cupcake  Apr 24, 2019

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