
Cosine Rule 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 type of triangle is being discussed in the problem?
Scalene triangle
Right-angled triangle
Equilateral triangle
Isosceles triangle
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which mathematical rule is chosen to solve the problem?
Tangent rule
Cosine rule
Sine rule
Pythagorean theorem
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main challenge in remembering the cosine rule?
The use of angles
The need for a calculator
The extra term at the end
The order of operations
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in applying the cosine rule?
Square the two known sides
Identify the longest side
Multiply the sides
Find the angle
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What operation is performed after squaring the sides in the cosine rule?
Addition
Subtraction
Multiplication
Division
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the initial result of 106 considered incorrect?
It is not a whole number
It is the square of the length
It is too small
It is a negative number
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step to find the length of the side?
Divide by the angle
Multiply by two
Take the square root
Add the angles
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