## DESCRIPTION ## Precalculus: Trigonometry ## ENDDESCRIPTION ## KEYWORDS('trigonometry','inverse trigonometric functions') ## Tagged by cmd6a 5/11/06 ## DBsubject('Trigonometry') ## DBchapter('Analytic Trigonometry') ## DBsection('Inverse Trigonometric Functions') ## Date('') ## Author('') ## Institution('Rochester') ## TitleText1('') ## EditionText1('') ## AuthorText1('') ## Section1('') ## Problem1('') DOCUMENT(); # This should be the first executable line in the problem. loadMacros( "PG.pl", "PGbasicmacros.pl", "PGchoicemacros.pl", "PGanswermacros.pl", "PGauxiliaryFunctions.pl", "PGasu.pl", "extraAnswerEvaluators.pl" ); TEXT(beginproblem()); $showPartialCorrectAnswers = 1; @values =('\frac{1}{36}','\frac{1}{9}','\frac{1}{16}','\frac{1}{25}');$tag1 = random(0,3,1); $pi = 3.1415927; @ans1 = (arccos(1/6), arccos(1/3), arccos(1/4), arccos(1/5)); @ans2= (arccos(-1/6),arccos(-1/3),arccos(-1/4),arccos(-1/5)); @ans3=(2*$pi-arccos(-1/6),2*$pi-arccos(-1/3),2*$pi-arccos(-1/4),2*$pi-arccos(-1/5)); @ans4=(2*$pi-arccos(1/6),2*$pi-arccos(1/3),2*$pi-arccos(1/4),2*\$pi-arccos(1/5)); TEXT(EV2(<