26. Two boats leave a marina at the same time. The first boat travels 6 knots at a bearing of N39°E, and thesecond boat travels 4 knots at a bearing of $87°W.a. How far apart are the boats at the end of 2 hr?b. What is the bearing from the first boat to the second boat at that time?

Formulas:Resultant vector formula, This formula will be used to calculate the relative velocity.The…

Answered: Two boats leave a marina at the same…

Trigonometry (11th Edition)

11th Edition

ISBN:9780134217437

Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels

Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels

Chapter1: Trigonometric Functions

Section: Chapter Questions

Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.

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26. Two boats leave a marina at the same time. The first boat travels 6 knots at a bearing of N39°E, and the
second boat travels 4 knots at a bearing of $87°W.
a. How far apart are the boats at the end of 2 hr?
b. What is the bearing from the first boat to the second boat at that time?

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The chapter of the book this question comes from has us using the law of cosines to solve these problems so we're subtracting 2ABcos(theta) in the formula rather than adding it. I'm having trouble understanding the difference between the resultant vector formula used here and the law of cosines, can you help me understand how using the law of cosines would be different?

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