Math Problem Statement
Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠A1 is smaller than ∠A2.)
b = 45, c = 43, ∠C = 36°
Solution
To solve for all possible triangles that satisfy the given conditions using the Law of Sines, we are given the following information:
- (side opposite ∠B)
- (side opposite ∠C)
We can apply the Law of Sines, which states:
- First, we use the known values for , , and to solve for :
Let's calculate .We have:
Now, we can find by taking the inverse sine of this value:
Let’s calculate .We have:
Next, we can calculate using the fact that the sum of the angles in a triangle is :
Let’s calculate .We have:
This gives us one possible triangle. Now, we check if there is a second possible triangle by considering the fact that can also correspond to . This is because sine has the same value for an angle and its supplement.
So, we calculate the second possible value for :
Let’s calculate .It seems like I can’t do more advanced data analysis right now. Please try again later.
However, here's the process you can follow to find the second possible triangle manually:
-
Calculate the second possible angle : Substituting , we get:
-
Check if is less than : Since the sum is less than , a second triangle is possible.
-
Calculate :
Thus, there are two possible triangles:
- First triangle: , ,
- Second triangle: , ,
Let me know if you'd like further details!
Follow-up questions:
- How does the Law of Sines help determine ambiguous triangles?
- What is the general form of the Law of Sines?
- Why do we check for a second solution using ?
- How can you determine if a second triangle is possible?
- What happens if is greater than 1?
Tip: Always check for a second triangle when solving with the Law of Sines, as it often leads to ambiguous cases.
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Law of Sines
Ambiguous Case
Formulas
Law of Sines: (sin A / a) = (sin B / b) = (sin C / c)
Sum of angles in a triangle: A + B + C = 180°
Theorems
Law of Sines
Suitable Grade Level
Grades 10-12
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