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sec(3x) = 2

 Jun 1, 2017
 #1
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sec (3x)   = 2

 

This happens where   cos (3x)  =  1/2

 

So  3x   =    pi/3   +  2 pi *n         and    3x   =  5pi / 3  + 2pi*n   where n is an integer

 

Dividing both sides by 3, we have that

 

x  =  pi/9 + (2/3)pi*n    and   x   =  5pi/ 9  + (2/3)pi*n      where n is an integer

 

 

 

cool cool cool 

 Jun 1, 2017

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