Posted by Sammy on Monday, December 3, 2012 at 8:14pm.
MONDAY
December 3, 2012 SCHOOL SUBJECTS
Art
Business
Computers
English
Foreign Languages
Health
Home Economics
Math
Music
Physical Education
Science
Social Studies
GRADE LEVELS
Preschool
Kindergarten
Elementary School
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th Grade
7th Grade
8th Grade
High School
9th Grade
10th Grade
11th Grade
12th Grade
College
Adult Education
Post a New QuestionCurrent QuestionsChat With Live Tutors
Homework Help: Math (trigonometry)
Posted by Sammy on Monday, December 3, 2012 at 4:25pm.
From a boat on the water, the angle of elevation of the top of a cliff is 31°. From a point 300 m closer, the angle of elevation is 33°. Find the height of the cliff.
the answer should be 2411 m.
I had tan31° = h/x+(x300)
tan33° = h/x300 > (x300)tan33° = h.
I subbed the first one into the second:
tan31° = (x300)tan33°/x+x300
I'm not sure how to go from there or if what I have so far is even right.

Math (trigonometry)  Damon, Monday, December 3, 2012 at 8:24pm
tan 33 = h/x
tan 31 = h/(x+300)
so
h = x tan 33 = .649 x
then
tan 31 = .649 x/(x+300)
(x+300)(.601) = .649 x
x + 300 = 1.08 x
.08 x = 300
x = 3750
h = .649 x = 2433
Carry more significant figures than I did. When you do the 1.08  1 you lose a lot of accuracy

Math (trigonometry)  Ibrahim Sakalaki Mushadh Fareed Al Maktoum Al Baghdadi, Sunday, September 25, 2016 at 5:29am
yes i want to do the things very much
Answer This Question
Related Questions
 english   Computers  English  Foreign Languages  Health  Home Economics  ...
 Biochem  Computers English Foreign Languages Health Home Economics Math Music ...
 Algebra  Business Computers English Foreign Languages Health Home Economics ...
 Physics  Home Economics Math Music Physical Education Science Social Studies ...
 MATH  there are 400 students at smith Elementary school 1/4 of the students are...
 language arts  WEDNESDAY March 11, 2015 SCHOOL SUBJECTS Art Business Computers ...
 math 5th grade  Hunter school has a kindergarten and grades 1 through 6. there ...
 Math Lit  In a school there are 122 grade 8s, 105 grade 9s, 134 grade 10s, 109 ...
 11th grade  The students of litchfield High school are in grades 9,10,11,12. Of...
 5th grade  My daughter is taking OLSAT test for gift & talented middle school. ...
More Related Questions