Use the unit circle to find the value of cos(7pi )/(6) and even or odd trigonometric functions to find the value of cos(-(7pi )/(6)).
Select the correct choice below and fill in any answer boxes within your choice.
A. cos(7pi )/(6)=
(Type an exact answer, using radicals as needed. Simplify your answer. Rationalize the denominator.)
B. The expression is undefined.
Use the unit circle to find the value of
Select the correct choice below
7T cos and even or odd trigonometric 6 functions to find the value of
and fill in any answer boxes within your choice
7T
OA. 7T coS 6 (Type an exact answer, using radicals as needed. Simplify your answer.Rationalize the denominator.)
cos
3
13 2 2
(0,1)
13
31 22
3
T
6
B. The expression is undefined.
-1,0
1,0 3 2
13 2
1
2
2
43 2
1 2
13 2
2