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Mathematics 15 Online
OpenStudy (ttop0816):

What is the minimum y value on the graph of y = cosx in the interval -pi/2 ≤ x ≤ pi/2? -1 -sqroot2/2 -1/2 0

random231 (random231):

|dw:1389704251899:dw| can u say the answer now?

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