document.write( "Question 906371: if cos x = squareroot of 2 over 2 in which quadrants could angle x terminate only one 2 has the square root \n" ); document.write( "
Algebra.Com's Answer #549756 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! if cos x = squareroot of 2 over 2 in which quadrants could angle x terminate only one 2 has the square root \n" ); document.write( "----- \n" ); document.write( "Note: sqrt(2)/2 is a positive number. \n" ); document.write( "----- \n" ); document.write( "By devinition, cosine = x/r \n" ); document.write( "r is always positive because r = sqrt(x^2+y^2) \n" ); document.write( "So cos is positive when x is positive. \n" ); document.write( "x is positive in QI and in QIV \n" ); document.write( "--- \n" ); document.write( "Ans: the angle must terminate in QI or in QIV. \n" ); document.write( "---------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "--------------- \n" ); document.write( " |