SOLUTION: How to find the sin, cos and tan of 19pi/6 using the unit circle.

Question 615316: How to find the sin, cos and tan of 19pi/6 using the unit circle.
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
Since , would be an more than one full circle. So and are co-terminal angles and will have the same sin, cos and tan values.

Since , is more than . This makes (and ) terminate in the 3rd quadrant with a reference angle of

Since and since sin is negative in the 3rd quadrant,
Since and since cos is negative in the 3rd quadrant,
Since and since tan is positive in the 3rd quadrant,
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