View of /trunk/NationalProblemLibrary/ASU-topics/setTrigIdentities/srw7_1_7.pg

    1 ##DESCRIPTION
    2 ## Precalculus, Trigonometric Identities
    3 ##ENDDESCRIPTION
    4 
    5 ## KEYWORDS('precalculus','trigonometry','identities')
    6 ## Tagged by skm9b
    7 
    8 ## DBsubject('Trigonometry')
    9 ## DBchapter('Analytic Trigonometry')
   10 ## DBsection('Trigonometric Identities')
   11 ## Date('5/26/2005')
   12 ## Author('Jeff Holt')
   13 ## Institution('UVA')
   14 ## TitleText1('Calculus: Early Transcendentals')
   15 ## EditionText1('5')
   16 ## AuthorText1('Stewart')
   17 ## Section1('21')
   18 ## Problem1(' ')
   19 
   20 ## TitleText2('Calculus: Early Transcendentals')
   21 ## EditionText2('6')
   22 ## AuthorText2('Stewart')
   23 ## Section2('21')
   24 ## Problem2('')
   25 
   26 DOCUMENT();        # This should be the first executable line in the problem.
   27 
   28 loadMacros(
   29 "PG.pl",
   30 "PGbasicmacros.pl",
   31 "PGchoicemacros.pl",
   32 "PGanswermacros.pl",
   33 "PGauxiliaryFunctions.pl"
   34 );
   35 
   36 TEXT(beginproblem());
   37 $showPartialCorrectAnswers = 0;
   38 
   39 
   40 TEXT(EV2(<<EOT));
   41 Simplify and write the trigonometric expression in terms of sine and cosine:
   42 
   43 \[\sin x + \cot x \cos x =\frac{1}{f(x)}\]
   44 
   45 \(f(x)=\) \{ans_rule(10)\}.
   46 $BR
   47 EOT
   48 
   49 $ans1="sin(x)";
   50 
   51 ANS(fun_cmp($ans1));
   52 
   53 ENDDOCUMENT();        # This should be the last executable line in the problem.