
Trigonometric Concepts and Reference Angles
Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial step in defining sine, cosine, and tangent?
Using a circle
Using a coordinate plane
Using a square
Using a right triangle
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do we extend trigonometric ratios beyond acute angles?
By using a different set of angles
By using a different set of ratios
By using a coordinate plane
By using only acute angles
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the sine of an angle represent on a coordinate plane?
The y-coordinate of a point
The ratio of the y-coordinate to the hypotenuse
The x-coordinate of a point
The ratio of the x-coordinate to the hypotenuse
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a reference angle?
An angle used to simplify trigonometric calculations
An angle that is always 90 degrees
An angle that is always acute
An angle that is always obtuse
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the reference angle for a 135-degree angle calculated?
By subtracting 90 from 135
By adding 90 to 135
By adding 135 to 180
By subtracting 135 from 180
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sine of a 135-degree angle?
-√2/2
1/√2
-1/√2
√2/2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cosine of a 135-degree angle?
1/√2
-1/√2
√2/2
-√2/2
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