SOLUTION: Simplify: cos 240 degrees. sin 15 degrees OVER (this is a fraction) cos(-30). cos 105 degrees. sin 270 degrees please help,

Algebra ->  Trigonometry-basics -> SOLUTION: Simplify: cos 240 degrees. sin 15 degrees OVER (this is a fraction) cos(-30). cos 105 degrees. sin 270 degrees please help,       Log On


   

Question 926877: Simplify:
cos 240 degrees. sin 15 degrees OVER (this is a fraction) cos(-30). cos 105 degrees. sin 270 degrees
please help,
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Simplify:
cos 240 degrees. sin 15 degrees OVER (this is a fraction) cos(-30). cos 105 degrees. sin 270 degrees
***
cos%28240%29sin%2815%29%2Fcos%28-30%29cos%28105%29sin%28270%29
cos%28240%29=-1%2F2

cos%28-30%29=cos%2830%29=sqrt%283%29%2F2

sin%28270%29=-1

%28-1%2F2%29%2F%28sqrt%283%29%2F2%29%28-1%29=1%2Fsqrt%283%29=sqrt%283%29%2F3