What is the point on the unit circle for pi

The video tutorial explains the unit circle, focusing on its four major points located at the axes. It covers how to graph angles, emphasizing the importance of starting from the initial side and rotating to the terminal side. The concept of radians is introduced, explaining how they relate to the radius of a circle and the number pi. The tutorial also discusses how to determine specific points on the unit circle, particularly when dealing with angles measured in radians.

What are the coordinates of the four major points on the unit circle?

• (1, 1), (-1, 1), (-1, -1), (1, -1)

• (1, 0), (0, 1), (-1, 0), (0, -1)

• (1, 0), (1, 1), (0, 1), (-1, 0)

• (0, 0), (1, 1), (-1, -1), (0, 1)

When graphing an angle, what is the term used for the side where the angle ends?

• Initial side

• Rotational side

• Terminal side

• Final side

How many radians are there in a full circle?

• 4π radians

• 3π radians

• 2π radians

• π radians

What is the value of π approximately?

• 1.61803

• 1.41421

• 2.71828

• 3.14159

In which direction is a positive angle measured?

• Counterclockwise

• Clockwise

• Horizontally

• Vertically