document.write( "Question 1079406: △ABC is a right triangle with right angle at ∠B .\r
\n" ); document.write( "\n" ); document.write( "AB=42 cm
\n" ); document.write( "BC=34 cm\r
\n" ); document.write( "\n" ); document.write( " What is the measure of ∠A , to the nearest degree?
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Algebra.Com's Answer #693773 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "△ABC is a right triangle with right angle at ∠\"B\" .\r
\n" ); document.write( "\n" ); document.write( "\"AB=42cm\"
\n" ); document.write( "\"BC=34cm\"\r
\n" ); document.write( "\n" ); document.write( "first find hypotenuse \"AC\"\r
\n" ); document.write( "\n" ); document.write( "\"%28AC%29%5E2=%28AB%29%5E2%2B%28BC%29%5E2\"
\n" ); document.write( "\"%28AC%29%5E2=%2842%29%5E2%2B%2834%29%5E2\"
\n" ); document.write( "\"%28AC%29%5E2=1764%2B1156\"
\n" ); document.write( "\"%28AC%29%5E2=2920\"
\n" ); document.write( "\"AC=sqrt%282920%29\"
\n" ); document.write( "\"AC=54.04\"
\n" ); document.write( "\"AC=54\"\r
\n" ); document.write( "\n" ); document.write( "now use \"sin%28A%29=AB%2FAC\"\r
\n" ); document.write( "\n" ); document.write( "\"sin%28A%29=42%2F54\"\r
\n" ); document.write( "\n" ); document.write( "\"sin%28A%29=0.78\"\r
\n" ); document.write( "\n" ); document.write( "\"A=sin%5E-1%280.78%29\"\r
\n" ); document.write( "\n" ); document.write( "\"A=51.26\"°\r
\n" ); document.write( "\n" ); document.write( "to the nearest degree \"A=51\"°\r
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