SOLUTION: What is the exact value of cos -150 degrees?

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Question 1011053: What is the exact value of cos -150 degrees?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What is the exact value of cos -150 degrees?
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cos(-150) = -cos(30) = -sqrt(3)/2
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Cheers,
Stan H.
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