Answer
x=4$\sqrt 3$/3
Work Step by Step
tan30°=4/x;
x=4/tan30°=4/$\sqrt 3$=4$\sqrt 3$/3
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 6 - Section 6.2 - Trigonometry of Right Triangles - 6.2 Exercises - Page 487: 18
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