document.write( "Question 671963: How do you figure out sin=4/5,cos<0 \n" ); document.write( "

Algebra.Com's Answer #417983 by lwsshak3(11628) $\"\"$ $\"About$

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How do you figure out sin=4/5,cos<0
\n" ); document.write( "If cos<0, then sin=4/5 must be in quadrant II where cos<0 and sin>0
\n" ); document.write( "sin x=4/5
\n" ); document.write( "x≈126.88º \n" ); document.write( "

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