[npl] / trunk / NationalProblemLibrary / Rochester / setTrig09Laws / srw6_5_5.pg Repository: Repository Listing bbplugincoursesdistsnplrochestersystemwww

# View of /trunk/NationalProblemLibrary/Rochester/setTrig09Laws/srw6_5_5.pg

Thu Aug 16 23:07:34 2007 UTC (5 years, 10 months ago) by jj
File size: 1125 byte(s)
```Moved problems back into place in the Rochester library, and set up
redirect files from their former locations.
```

```    1 ##DESCRIPTION
2 ## Algebra: Trigonometry of right triangles
3 ##ENDDESCRIPTION
4
5 ##KEYWORDS('algebra', 'trigonometry', 'The law of cosines')
6
7 ## tcao , PAID on 11-24-2003
8
9 ## DBsubject('Trigonometry')
10 ## DBchapter('Trigonometric Functions of Angles')
11 ## DBsection('The Law of Cosines')
12 ## Date('6/3/2002')
13 ## Author('')
14 ## Institution('')
15 ## TitleText1('Precalculus')
16 ## EditionText1('3')
17 ## AuthorText1('Stewart, Redlin, Watson')
18 ## Section1('6.5')
19 ## Problem1('3')
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());
32
33
34 TEXT(EV2(<<EOT));
35 \$BBOLD Click on the graph to view a larger graph\$EBOLD
36 \$BR
37 Use the Law of Cosines to find the indicated angle \(x\) given in the graph
38 \$PAR \{ image("c6s5p5.gif") \} \$PAR
39 \$BR
40 \(x=\) \{ans_rule(10)\} degrees;
41 \$BR
42 EOT
43
44 \$ans1=arccos((68.01*68.01+42.15*42.15-37.83*37.83)/(2*68.01*42.15))*180/\$PI;
45 ANS(num_cmp(\$ans1));
46
47 ENDDOCUMENT();        # This should be the last executable line in the problem.
```