Question 803309: Find all real numbers that satisfy the equation.
cos x=(square root of)2/2
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Find all real numbers that satisfy the equation.
cos x=(square root of)2/2
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x = 45 degs + n*360, n = 0,1,2,3...
x = 315 degs + n*360, n = 0,1,2,3...
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In radians:
x = pi/4 degs + 2n*pi, n = 0,1,2,3...
x = 7pi/4 degs + 2n*pi, n = 0,1,2,3...
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