SOLUTION: cos(x+pi/2) + cos(x-pi/2) = 1
Algebra.Com
Question 830004: cos(x+pi/2) + cos(x-pi/2) = 1
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
no solution - one very easy way to check is to graph - you will see that the graphs are y=0 and y=1
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