SOLUTION: If sin theta= 4/9 and theta is in Quadrant 1, find cos(2theta).

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Question 849850: If sin theta= 4/9 and theta is in Quadrant 1, find cos(2theta).
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If sin theta= 4/9 and theta is in Quadrant 1, find cos(2theta).
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cos%282t%29+=+1+-+2sin%5E2%28t%29+=+1+-+32%2F81+=+49%2F81