SOLUTION: Find the exact value of 1-cos squared 10 degrees - cos squared 80 degrees. How do I do this without using a calculator? Please help! Ive been out of school for a while and I'm real

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Question 728467: Find the exact value of 1-cos squared 10 degrees - cos squared 80 degrees. How do I do this without using a calculator? Please help! Ive been out of school for a while and I'm really far behind!
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
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