document.write( "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 \n" ); document.write( "
Algebra.Com's Answer #536410 by Alan3354(69443)\"\" \"About 
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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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\n" ); document.write( "sinx=8/17 --> cos(x) = 15/17
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\n" ); document.write( "sin(2x) = 2 sin(x)cos(x)
\n" ); document.write( "\"cos%282x%29+=+sqrt%281+-+sin%5E2%282x%29%29\"
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