How do you find the exact value of #cos ((19pi)/6)#?
2 Answers
May 7, 2016
Explanation:
Trig table, unit circle, and property of supplementary arcs -->
May 9, 2016
Explanation:
We can subtract
#(19pi)/6-2pi=(19pi)/6-(12pi)/6=(7pi)/6#
Thus,
Notice that
Since cosine is negative in