document.write( "Question 1176720: Compute (All numbers are in degrees) \n" );
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Algebra.Com's Answer #804177 by ikleyn(52803)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Compute \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " Solution\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Let simplify the numerator, step by step.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "(1) sin(73°) = cos(90° - 73°) = cos(17°).\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " sin(107°) = sin(73°) = cos(17°)\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " So, the sum of the third and the fourth terms in the numerator is 2*cos(17°).\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "(2) sin(13°) + sin(47°) = ( use the basic formuls of trigonometry sin(a) + sin(b) =\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |