SOLUTION: What is the exact value of sin(5pi/4)?

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Question 944209: What is the exact value of sin(5pi/4)?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the exact value of sin(5pi/4)?
Reference angle is pi/4.
5pi/4 is in QIII where sin is negative.
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Ans:: sin(5pi/4) = -sin(pi/4) = -sqrt(2)/2
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Cheers,
Stan H.
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