If sin(2theta + 18) = cos(5theta - 12), which of the following pairs of angles are represented in this equation?
(a)42, 48 degrees
(b)38, 52 degrees
(c) 12, 68 degrees
(d) 45, 45 degrees
See also the comments in post #3 of http://www.mathhelpforum.com/math-he...2-solve-x.html