Applications of Trigonometry and Vectors
Not what you're looking for?
Please see the attached file for the fully formatted problems.
1. Find the indicated part of each triangle ABC.
C = 118°, b = 130km, a = 75km; find c
The correct answer to this problem is 180 km how did they come up with that answer?
2. Height of a Balloon: The angles of elevation of a balloon from two points A and B on level ground are 24°50' and 47°20', respectively. As shown in the figure, points A, B, and C are in the same vertical plane and points A and B are 8.4 miles apart. Approximate the height of the balloon above the ground to the nearest tenth of a mile. The correct answer to this problem is 2.7 miles how did they come up with this answer?
Purchase this Solution
Solution Summary
Trigonometric application questions are solved. The solution is detailed and well presented. The solution received a rating of "5/5" from the student who originally posted the question.
Solution Preview
1.)
In triangle ABC, because,
cos(C) = (a^2 + b^2 - c^2)/(2*a*b)
=> cos(118) = (75^2 + 130^2 - c^2)/(2*75*130)
=> -0.469471563 = (22525 - c^2)/19500
=> 22525 - c^2 = ...
Education
- BEng, Allahabad University, India
- MSc , Pune University, India
- PhD (IP), Pune University, India
Recent Feedback
- " In question 2, you incorrectly add in the $3.00 dividend that was just paid to determine the value of the stock price using the dividend discount model. In question 4 response, it should have also been recognized that dividend discount models are not useful if any of the parameters used in the model are inaccurate. "
- "feedback: fail to recognize the operating cash flow will not begin until the end of year 3."
- "Answer was correct"
- "Great thanks"
- "Perfect solution..thank you"
Purchase this Solution
Free BrainMass Quizzes
Know Your Linear Equations
Each question is a choice-summary multiple choice question that will present you with a linear equation and then make 4 statements about that equation. You must determine which of the 4 statements are true (if any) in regards to the equation.
Exponential Expressions
In this quiz, you will have a chance to practice basic terminology of exponential expressions and how to evaluate them.
Probability Quiz
Some questions on probability
Graphs and Functions
This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.
Multiplying Complex Numbers
This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.