+0  
 
0
97
1
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i need help please some one help me solve this one

Guest Jun 18, 2018
 #1
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0

all you have to do is plug in the value for x

 

cos2(pi/2) = cos pi which = -1

cos2(pi/4) = cos pi/2 which equals 0

and so on

Guest Jun 18, 2018

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