document.write( "Question 968324: if cos theta = 4/5 and theta lies in quadrant IV, find sin(theta-pi)
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Algebra.Com's Answer #591776 by lwsshak3(11628)\"\" \"About 
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if cos theta = 4/5 and theta lies in quadrant IV, find sin(theta-pi)
\n" ); document.write( "cosx=4/5(Q4)
\n" ); document.write( "sinx=-3/5
\n" ); document.write( "sin(x-π)=sinxcosπ-cosxsinπ=-3/5*-1-4/5*0=3/5
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