SOLUTION: Find the x-intercepts for graph of cos(x) over the interval [0,4π]

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Question 1118992: Find the x-intercepts for graph of cos(x) over the interval [0,4π]
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.
They are the roots of the equation


cos(x) = 0:


x = pi%2F2, 3pi%2F2, 5pi%2F2 and  7pi%2F2.