
Law of Cosines and Triangle Properties

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Aiden Montgomery
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary focus of this lesson?
Solving right triangles using the Pythagorean theorem
Understanding the Law of Sines
Solving oblique triangles using the Law of Cosines
Learning about trigonometric inverses
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to find the relationship between the sides and an angle in a triangle?
Law of Cosines
Law of Sines
Pythagorean theorem
Trigonometric inverses
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When using the Law of Cosines, what does the lowercase 'c' represent?
The sum of all sides
The hypotenuse of the triangle
The side opposite angle C
The angle opposite side c
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sum of all interior angles in any triangle?
90 degrees
360 degrees
180 degrees
270 degrees
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the first case of the Law of Cosines, what is required to find an angle?
Two angles and one side
All three sides
One angle and two sides
All three angles
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the approximate measure of angle Y when using the Law of Cosines with sides 14, 10, and 21?
45.2 degrees
90.0 degrees
34.8 degrees
60.0 degrees
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the second case of the Law of Cosines, what is known to find the missing side?
Two sides and the included angle
All three sides
All three angles
One side and two angles
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