Filling In Coordinates on the Unit Circle

What is the initial angle discussed in the video for setting up the unit circle?

• 0 degrees

• 30 degrees

• 45 degrees

• 90 degrees

What geometric shape is used to help find the X and Y coordinates on the unit circle?

• Square

• Right Triangle

• Circle

• Rectangle

What is the length of the hypotenuse in the triangles discussed?

• 1.5 units

• 0.5 units

• 1 unit

• 2 units

For a 30-degree angle in the unit circle, what is the X-coordinate?

• 1

• sqrt(2)/2

• sqrt(3)/2

• 1/2

For a 60-degree angle in the unit circle, what is the Y-coordinate?

• sqrt(2)/2

• 1

• sqrt(3)/2

• 1/2

In which quadrant are both X and Y coordinates positive?

• Quadrant I

• Quadrant II

• Quadrant III

• Quadrant IV

What happens to the X coordinate when reflecting points from Quadrant I to Quadrant II?

• It doubles in size

• It becomes negative

• It becomes positive

• It remains unchanged

What is the Y-coordinate for a 45-degree angle in the unit circle?

• 1

• sqrt(2)/2

• sqrt(3)/2

• 1/2

How is the 45-degree triangle described in terms of its sides?

• Isosceles

• Right

• Scalene

• Equilateral

What is the process called when removing a square root from the denominator?

• Rationalizing

• Optimizing

• Normalizing

• Standardizing