document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=149406>Question 149406</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find:<BR>\n" );
document.write( "sin A if cos A = -(3/5) and 90 degrees < A < 180 degrees </SPAN>\n" );
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document.write( "sin A if cos A = -(3/5) and 90 degrees < A < 180 degrees<BR>\n" );
document.write( "If cosA = -3/5, x = -3 , r = 5 in the 2nd quadrant.<BR>\n" );
document.write( "Then y = sqrt(r^2-x^2) = sqrt(25-9] = sqrt(16) = 4<BR>\n" );
document.write( "Then sinA = y/r = 4/5<BR>\n" );
document.write( "===========================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );