What is the primary object discussed in the introduction that helps in understanding trigonometry beyond right-angle triangles?

Unit Circle and Trigonometric Functions

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

Lucas Foster
FREE Resource
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Sine Wave
The Cartesian Plane
The Unit Circle
The Pythagorean Theorem
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which angle is equivalent to 45 degrees when considering a full revolution on the unit circle?
180 degrees
90 degrees
270 degrees
405 degrees
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sine of 45 degrees when squared, according to the trick taught in the video?
0.5
0.25
0.75
1.0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the context of the unit circle, what does the sine of an angle represent?
The angle in radians
The y-coordinate
The x-coordinate
The radius
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which coordinate does the cosine of an angle correspond to on the unit circle?
The angle in degrees
The x-coordinate
The radius
The y-coordinate
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between tangent and the coordinates on the unit circle?
Tangent is the radius
Tangent is the ratio of y to x
Tangent is the y-coordinate
Tangent is the x-coordinate
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the sine of an angle is 1/√2, what is another angle with the same sine value due to symmetry?
90 degrees
135 degrees
225 degrees
180 degrees
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