Unit Circle, Terminal Points, Reference Angles

Front

What is the terminal point for t = 7π/3?

Back

(1/2, √3/2)

Front

What is the radius of a unit circle?

Back

1

Front

What is the terminal point for t = 13π/4?

Back

(-√2/2, -√2/2)

Front

What quadrant is 7π/3?

Back

I

Front

What is the terminal point for t = -5π?

Back

(-1, 0)

Front

Define the unit circle.

Back

A circle with a radius of 1 centered at the origin (0,0) in the coordinate plane.

Front

What is a terminal point in the context of the unit circle?

Back

The point on the unit circle corresponding to a given angle measured from the positive x-axis.

Front

How do you find the reference angle for an angle in standard position?

Back

Subtract the angle from 180° (or π radians) if it is in the second quadrant, or subtract 360° (or 2π radians) if it is in the fourth quadrant.

Front

What is the reference angle for 7π/3?

Back

7π/3 - 2π = π/3.

Front

What are the coordinates of the terminal point for t = π/4?

Back

(√2/2, √2/2)