SOLUTION: How do I find the sin, cos and tan of 13pi/6 by using the unit circle.

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Question 615309: How do I find the sin, cos and tan of 13pi/6 by using the unit circle.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How do I find the sin, cos and tan of 13pi/6 by using the unit circle.
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(13/6)pi = (2 1/6)pi = 2pi + (1/6)pi
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2pi is one around the circle which gets you back to where you started.
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sin (13pi/6) = sin(pi/6) = 1/2
cos(13pi/6) = cos(pi/6) = sqrt(3)/2
tan(13pi/6) = tan(pi/6) = (1/2)/(sqrt(3)/2) = 1/sqrt(3)
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Cheers,
Stan H.
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