document.write( "Question 32560: evaluate wihout wsing a calcuator. cot60 \n" ); document.write( "
Algebra.Com's Answer #19014 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Draw a right triangle with acute angles of 30 degrees and 60 degrees. \n" ); document.write( "Let the side opposite the 30 degree angle have length \"1\" \n" ); document.write( "Then the hypotenuse will have a length of \"2\". \n" ); document.write( "Then, using Pythagoras, the third side will be sqrt 3\r \n" ); document.write( "\n" ); document.write( "The Cosine of an angle is (adjacent)/(hypotenuse) \n" ); document.write( "The side adjacent to the 60 degree angle is \"1\". \n" ); document.write( "So the Cos 60 degrees is 1/2 \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |