Finding coterminal angles using the unit circle

The video tutorial explains coterminal angles, which are angles sharing the same initial and terminal sides. It covers how to find coterminal angles in both degrees and radians using graphical and algebraic methods. The tutorial emphasizes the importance of understanding the positive and negative directions when calculating angles and provides examples to illustrate these concepts.

What is a coterminal angle of 120 degrees?

• 240 degrees

• 360 degrees

• -240 degrees

• 180 degrees

Which method is NOT used to find coterminal angles?

• Numerical method

• Graphical method

• Visual method

• Algebraic method

If an angle is -330 degrees, what is its coterminal angle?

• 120 degrees

• 90 degrees

• 60 degrees

• 30 degrees

What is the radian equivalent of 180 degrees?

• π/2

• 3π/2

• 2π

• π

How do you find a coterminal angle for a positive angle in radians?

• Add 2π

• Subtract 2π

• Subtract π

• Add π

What is the coterminal angle of 11π/3 in radians?

• 5π/3

• 11π/3

• 7π/3

• 9π/3

What should you do to find a coterminal angle for a negative angle in degrees?

• Add 180 degrees

• Subtract 180 degrees

• Subtract 360 degrees

• Add 360 degrees