Find the coordinate point of the given angle

Find the coordinate point of the given angle

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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Quizizz Content

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The video tutorial explains how to sketch angles like 14π/3, find coterminal angles by subtracting 2π, and reflect points over the X-axis. It emphasizes understanding the positive direction of angles and calculating the smallest positive coterminal angle. The tutorial concludes with a demonstration of reflecting a point over the X-axis, resulting in a change in the X-coordinate's sign.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the direction of the angle 14π/3 on the unit circle?

Both directions

Negative direction

No direction

Positive direction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you find the smallest positive coterminal angle for 14π/3?

Divide by 2π

Subtract 2π

Add 2π

Multiply by 2π

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the coterminal angle of 14π/3 after subtracting 6π/3 twice?

2π/3

8π/3

10π/3

4π/3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the X-coordinate of a point when it is reflected over the X-axis?

It doubles

It becomes positive

It becomes negative

It remains the same

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the coordinates of the point at t = 2π/3 after reflection over the X-axis?

(-1/2, sqrt 3 / 2)

(-1/2, -sqrt 3 / 2)

(1/2, sqrt 3 / 2)

(1/2, -sqrt 3 / 2)