document.write( "Question 1035983: In the accompanying diagram of right triangle ABC, AB = 5000 and angle C =90 degrees. If the measure of angle A is 20degrees40', find AC to the nearest unit.\r
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document.write( "Thanks for helping me out. \n" );
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Algebra.Com's Answer #650693 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! If you draw it you will see that the cosine of angle A is AC/AB, or \n" ); document.write( "cos A = AC/5000 \n" ); document.write( "Now 40' of arc is 2/3 of a degree, or about .667, so we have \n" ); document.write( "cos 20.667 = AC/5000 \n" ); document.write( "AC = 5000 cos 20.667 = 4678 or so units \n" ); document.write( " |