

Trigonometry and Triangle Area Concepts
Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Thomas White
FREE Resource
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13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main focus of this video tutorial?
Finding the volume of a triangle using trigonometry
Using algebra to solve triangle problems
Using trigonometry to calculate the area of a triangle
Calculating the perimeter of a triangle using trigonometry
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to calculate the area of a basic triangle?
Area = 1/2 x base x height x sin(angle)
Area = base x height x sin(angle)
Area = 1/2 x base x height
Area = base x height
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the sloped height not used in basic triangle area calculations?
It is not a real measurement
It is shorter than the base
It is longer than the base
It is not perpendicular to the base
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What information is needed to use trigonometry to find the area of a triangle without a perpendicular height?
The base, sloped height, and angle
The sloped height and the angle
The base and the angle
The base and the sloped height
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a right triangle, which trigonometric function is used to find the opposite side when the hypotenuse is known?
Cosine
Secant
Tangent
Sine
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for the area of a triangle using trigonometry?
Area = base x height x sin(angle)
Area = 1/2 x base x height
Area = a x b x sin(C)
Area = 1/2 x a x b x sin(C)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which sides and angle are needed to use the formula 1/2 x a x b x sin(C) for triangle area?
All three angles
All three sides
Two angles and the side between them
Two sides and the angle between them
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