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sin(-π/2
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Kelly213

by Kelly213 at February 22, 2010

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-1

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JorgeC

JorgeC February 22, 2010

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sin(-pi/2) is sin(-90) which is the same as sin(270) which equals -1.

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Delta

Delta February 22, 2010

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Answer: -1

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jorge__omg.......

jorge__omg....... February 23, 2010