SOLUTION: find the exact value of sin(2x) and cos(2x) and the quadrant in which 2x lies, given that sinx=8/17 and x is in the first quadrant

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Question 887153: find the exact value of sin(2x) and cos(2x) and the quadrant in which 2x lies, given that sinx=8/17 and x is in the first quadrant
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
find the exact value of sin(2x) and cos(2x) and the quadrant in which 2x lies, given that sinx=8/17 and x is in the first quadrant
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sinx=8/17 --> cos(x) = 15/17
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sin(2x) = 2 sin(x)cos(x)
cos%282x%29+=+sqrt%281+-+sin%5E2%282x%29%29