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# View of /trunk/NationalProblemLibrary/Rochester/setTrig07Identity/srw7_2_3.pg

Thu Aug 16 23:07:34 2007 UTC (5 years, 9 months ago) by jj
File size: 1073 byte(s)
Moved problems back into place in the Rochester library, and set up
redirect files from their former locations.


    1 ##DESCRIPTION
2 ## Algebra: Analytic Trigonometry
3 ##ENDDESCRIPTION
4
5 ##KEYWORDS('algebra', 'analytic trigonometry', 'addition and subtraction formulas')
6
7 ## tcao , PAID on 11-24-2003
8
9 ## DBsubject('Trigonometry')
10 ## DBchapter('Analytic Trigonometry')
11 ## DBsection('Addition and Subtraction Formulas')
12 ## Date('6/3/2002')
13 ## Author('')
14 ## Institution('')
15 ## TitleText1('Precalculus')
16 ## EditionText1('3')
17 ## AuthorText1('Stewart, Redlin, Watson')
18 ## Section1('7.2')
19 ## Problem1('2')
20 DOCUMENT();        # This should be the first executable line in the problem.
21
23 "PG.pl",
24 "PGbasicmacros.pl",
25 "PGchoicemacros.pl",
27 "PGauxiliaryFunctions.pl"
28 );
29
30 TEXT(beginproblem());
31 $showPartialCorrectAnswers = 0; 32 33 34 TEXT(EV2(<<EOT)); 35 Use an addition or subtraction formula to find the exact value of 36 $$\sin 165^\circ=\frac{\sqrt{A}(\sqrt{B}-1)}{4}$$. 37$BR
38 $$A=$$ \{ans_rule(10)\};
39 $BR 40 $$B=$$ \{ans_rule(10)\}. 41$BR
42 EOT
43
44 $ans1=2; 45$ans2=3;
46
47 ANS(num_cmp($ans1)); 48 ANS(num_cmp($ans2));
49
50 ENDDOCUMENT();        # This should be the last executable line in the problem.