Learning to determine two co terminal angles from a negative angle

The video tutorial explains how to find coterminal angles by adding and subtracting 2π. The instructor demonstrates the process of obtaining the smallest positive and negative angles from a given angle. Mistakes in grading are addressed, and the correct solutions are provided.

What is the result of subtracting 2π twice from 11π/4?

• 8π/4

• 5π/4

• 19π/4

• 3π/4

Why is it necessary to subtract 2π again after obtaining 3π/4?

• To find a negative angle

• To find a smaller positive angle

• To find a larger angle

• To find a coterminal angle

What is the positive coterminal angle when adding 2π to 2π/3?

• 4π/3

• 2π/3

• 8π/3

• 10π/3

What mistake did the teacher acknowledge in the graded problem?

• Incorrect final answers for coterminal angles

• Misunderstanding of positive angles

• Wrong calculation of 11π/4

• Incorrect subtraction of 2π

What are the correct positive and negative coterminal angles mentioned in the correction?

• 4π/3 and -2π/3

• 5π/4 and -11π/4

• 2π/3 and -10π/3

• 3π/4 and -8π/4