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what is sec2x = 2

 Mar 2, 2015

Best Answer 

 #1
avatar+23254 
+5

sec(2x)  =  2   --->   2x  =  sec-1(2)   --->   x  =  sec-1(2) / 2   --->   x  =  60°  or 300°  

   (plus/minus whole number multiples of 360° and )

This problem can be changed into a cos problem:  sec(2x)  =  2   --->   cos(2x)  =  1/2    

--->   2x  =  cos-1(1/2)   --->   x  =  cos-1(1/2)  / 2   --->   x  =  60°  or 300°      

   (plus/minus whole number multiples of 360°)

 Mar 2, 2015
 #1
avatar+23254 
+5
Best Answer

sec(2x)  =  2   --->   2x  =  sec-1(2)   --->   x  =  sec-1(2) / 2   --->   x  =  60°  or 300°  

   (plus/minus whole number multiples of 360° and )

This problem can be changed into a cos problem:  sec(2x)  =  2   --->   cos(2x)  =  1/2    

--->   2x  =  cos-1(1/2)   --->   x  =  cos-1(1/2)  / 2   --->   x  =  60°  or 300°      

   (plus/minus whole number multiples of 360°)

geno3141 Mar 2, 2015

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