SOLUTION: Use an Addition or Subtraction Formula to find the exact value of the expression sin 195°

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Question 629888: Use an Addition or Subtraction Formula to find the exact value of the expression
sin 195°
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
sin 195° = sin(150° + 45°)
= (sin 150°)(cos 45°) + (cos 150°)(sin 45°)
= %281%2F2%29%28sqrt%282%29%2F2%29+%2B+%28-sqrt%283%29%2F2%29%28sqrt%282%29%2F2%29
= highlight%28%28sqrt%282%29+-+sqrt%286%29%29%2F4%29