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f(theta)=costheta
1- complete the table using the unit circle and sketch thr graph
theta= -360 ,-270 ,-180 ,-90 ,0 ,90 ,180 ,270 ,360 .
f(theta)=
2- state the coordinates of the maximum and manimum valuas of f(theta)=costheta within the domaine of the table?
3- what are the coordinates of the zeros of the functoin within this domain?
4- show that f(theta)=f(-theta) for all values of theta in the table?
5- explain why f(theta)=f(-theta)for all theta ?