document.write( "Question 851696: Find the value of cosx and sinx, given cosx=3/8 and secx<0 \n" ); document.write( "
Algebra.Com's Answer #512931 by stanbon(75887)\"\" \"About 
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Find the value of cosx and sinx, given cosx = -3/8 and secx<0
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\n" ); document.write( "Note: If sec(x) < 0, cos(x) is also < 0
\n" ); document.write( "But sin(x) could be positive (QII) or negative(QIII).
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\n" ); document.write( "Since cos(x) = 3/8, sin(x) = sqrt(8^2-3^2)/8 = + or -sqrt(55)/8
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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