SOLUTION: Tan 5 pi / 3 Cos pi / 4 Cos 5 pi

Question 807715: Tan 5 pi / 3
Cos pi / 4
Cos 5 pi
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Tan (5pi/3)
Reference angle: pi/3
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5pi/3 is in QIV where tan is negative
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Ans:: tan(5pi/3) = -tan(pi/3) = -sqrt(3)
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Cos (pi/4) = sqrt(2)/2
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Cos(5pi) = cos(pi) = -1
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Cheers,
Stan H.
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