SOLUTION: find exact values of s given interval [0, 2pi) ; cos^2 s=1/2

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Question 904157: find exact values of s given interval [0, 2pi) ; cos^2 s=1/2
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
find exact values of s given interval [0, 2pi) ;
cos^2 s=1/2
cos(s)=√(1/2)=√2/2
s=π/4, 7π/4 (in quadrants I and IV in which cos>0)