sin(t)cos(t)[sec(t)-csc(t)]=
A. sin(t)-cos(t)
B. sec(t)-csc(t)
C. 2sin(t)cos(t)
D. sec^2(t)-csc^2(t)
E. None of the above
sin(t)cos(t)[sec(t)−csc(t)]=sin(t)cos(t)[1cos(t)−1sin(t)]=sin(t)cos(t)cos(t)−sin(t)cos(t)sin(t)=sin(t)−cos(t)
+295 
