Question #ab74b
1 Answer
Jul 31, 2017
Explanation:
There are two possibilities:
#sin theta - 1 = 0#
#sin theta = 1#
#theta = pi/2#
#2 cos theta + 1 = 0#
#2 cos theta = -1#
#cos theta = -1/2#
#theta = (2pi)/3, (4pi)/3#
So,