document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=981223>Question 981223</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Good day! Can you help me with this problem?\r<BR>\n" );
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document.write( "Express the following in terms of its cofunction:\r<BR>\n" );
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document.write( "cos (20°+A)\r<BR>\n" );
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document.write( "Thank you very much! </SPAN>\n" );
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document.write( "cos(x)=sin(90-x)<BR>\n" );
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document.write( "For x=(20°+A), in terms of cofunction:<BR>\n" );
document.write( "cos(20°+A)=sin(90-(20°+A))<BR>\n" );
document.write( "cos(20°+A)=sin(70-A) </SPAN>\n" );
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