Evaluating Trig Expressions Using Either Degree or Radian Measures
By L Braunling
Choose the correct value for each expression.
sin 2x where x = 30º
cos 2y where y = 
sec 2x where x = 2/9
tan 2z where z = (1/27) 
csc 2x where x = (1/3) 
cot 2a where a = 124/63
cos 2x where x = 3/4
sin 2m where m = 276º