Substitute x= 17pai/24 into the analytical formula of g(x), a.g (17pai/24) = sin (13pai/12) =-sin (pai//kloc-0
B.g( 17 pai/24)= sin(25 pai/ 12)= sin(pai/ 12)X
D.g (17pai/24) = cos (5pai/4) =-cos (pai/4) =-radical 2/2.x.
So choose C. This solution is: the "special case assignment method" in the special law. Special methods to solve multiple-choice questions are characterized by simplicity, rapidity and accuracy.