
- Resource Library
- Math
- Math Word Problems
- Problem Solving
- Solving Word Problems Involving Oblique Triangles
Solving Word Problems involving Oblique Triangles
Presentation
•
Mathematics
•
9th Grade
•
Medium
+1
Standards-aligned
Gabriel Cosme
Used 20+ times
FREE Resource
7 Slides • 14 Questions
1
2
I can illustrate Law of Sines
1.
I can illustrate Law of Cosines
2.
I can solve word problems involving oblique triangles
3.
3
In what other fields can Trigonometry be used?
How can the knowledge of Trigonometry be applied in solving real-life problems?
Essential Questions:
4
Multiple Choice
Which of the following can be used to solve for the missing side?
Law of Sines
Law of Cosines
SOH-CAH-TOA
Pythagorean Theorem
5
Multiple Select
Which of the following can be used to solve for m∠Y?
6
7
Fill in the Blanks
What measure indicates the true bearing of point S from point C in the figure?
Type answer...
8
Fill in the Blanks
What measure indicates the conventional bearing of point S from point C in the figure?
Type answer...
9
10
Draw
Problem 1:
(Read, analyze, & visualize the problem)
A large helium balloon is tethered to the ground by two taut lines. One line is 100 feet long and makes an 80⁰ angle with the ground, while the second line makes a 40⁰ angle with the ground.
a. How long is the second line?
b. How far apart are the two tethers
11
Fill in the Blanks
A large helium balloon is tethered to the ground by two taut lines. One line is 100 feet long and makes an 80⁰ angle with the ground, while the second line makes a 40⁰ angle with the ground.
a. How long is the second line?
Type answer...
12
Fill in the Blanks
A large helium balloon is tethered to the ground by two taut lines. One line is 100 feet long and makes an 80⁰ angle with the ground, while the second line makes a 40⁰ angle with the ground.
b. How far apart are the two tethers?
Type answer...
13
Draw
Problem 2: PAIR WORK
(Read, analyze, & visualize the problem)
A ship leaves a port and sails for 47 nautical miles on a course of 78 degrees. Then the ship changes its course to 158 degrees and sails for 96 nautical miles.
a. What is the distance of the ship from a port
b. What is the bearing from the port to the ship?
14
15
Fill in the Blanks
A ship leaves a port and sails for 72 nautical miles on a course of 78 degrees. Then the ship changes its course to 158 degrees and sails for 96 nautical miles.
a. What is the distance of the ship from the port?
Type answer...
16
Fill in the Blanks
A ship leaves a port and sails for 72 nautical miles on a course of 78 degrees. Then the ship changes its course to 158 degrees and sails for 96 nautical miles.
b. What is the true bearing from the port to the ship?
Type answer...
17
Open Ended
In what cases of oblique triangles do we need the use of Law of Sines and Cosines?
18
Match
Match the given conditions of an oblique triangle with the corresponding law.
SSS
SSA
SAS
SAA
ASA
Law of Cosines
Law of Sines (Ambiguous Case)
Law of Cosines
Law of Sines
Law of SInei
Law of Cosines
Law of Sines (Ambiguous Case)
Law of Cosines
Law of Sines
Law of SInei
19
Open Ended
In what other fields can Trigonometry be used?
How can the knowledge of Trigonometry be applied in solving real-life problems?
20
Poll
How did you find our lesson?
4
I understand the lesson and I can teach it to others.
3
I understand the lesson and I can do it on my own.
2
I understand the lesson but I need guidance in some parts.
1
I did not understand the lesson, and I need help in most parts.
21
Show answer
Auto Play
Slide 1 / 21
SLIDE
Similar Resources on Wayground
14 questions
Systems of Linear Equations
Presentation
•
9th Grade
15 questions
Distribution of Data
Presentation
•
9th Grade
17 questions
Function Notation
Presentation
•
9th Grade
15 questions
Segment Lengths in Circles
Presentation
•
9th Grade
16 questions
Reverse percentages
Presentation
•
9th Grade
14 questions
Distributions of Data
Presentation
•
9th Grade
18 questions
Literal Equations
Presentation
•
9th Grade
14 questions
Exponential Growth and Decay Vocabulary
Presentation
•
9th Grade
Popular Resources on Wayground
10 questions
Safety Day 2026 – Student Review
Quiz
•
9th Grade
21 questions
Continents and Oceans
Quiz
•
6th Grade
20 questions
Parts of Speech
Quiz
•
5th Grade
16 questions
Subject & Predicate
Quiz
•
5th Grade
25 questions
Multiplication Facts
Quiz
•
5th Grade
12 questions
Map Skills
Quiz
•
3rd Grade
22 questions
Continents and Oceans
Quiz
•
5th Grade
15 questions
Rounding Decimals
Quiz
•
5th Grade
Discover more resources for Mathematics
12 questions
Absolute Value Equations
Quiz
•
9th Grade
20 questions
Function or Not a Function
Quiz
•
8th - 9th Grade
11 questions
Slope from 2 points
Quiz
•
8th - 9th Grade
10 questions
Exploring the Basics of Exponents
Interactive video
•
6th - 10th Grade
10 questions
Solving Absolute Value Equations
Quiz
•
9th Grade
18 questions
SB 12.2 Write in point slope form
Quiz
•
9th Grade
12 questions
Identify Rigid Transformations
Quiz
•
8th - 12th Grade
10 questions
Complementary, Supplementary, Vertical, and Linear Pairs
Quiz
•
9th - 12th Grade