Answer
$1.29km $
Work Step by Step
As shown in the figure, $\bar {AB}=2km, A=40^\circ, B=70^\circ $
Assume the height of the balloon is $ x $:
$\frac{x}{tan(40)}+\frac{x}{tan(70)}=2$,
Solve for x:
$ x=1.29km $
Thomas' Calculus 13th Edition
by Thomas Jr., George B.
Published by
Pearson
ISBN 10:
0-32187-896-5
ISBN 13:
978-0-32187-896-0
Chapter 1: Functions - Practice Exercises - Page 38: 66
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
