Sketch the angle then find the reference angle

The video tutorial explains how to find coterminal angles by adding or subtracting 2π. The teacher discusses simplifying angles by removing extra revolutions and introduces the concept of reference angles, using π/3 as an example. The tutorial emphasizes understanding the relationship between angles and the X-axis, providing a clear explanation of how to graph these angles.

What is a coterminal angle?

• An angle that is always more than 360 degrees

• An angle that is exactly 90 degrees

• An angle that shares the same initial and terminal sides as another angle

• An angle that is always less than 180 degrees

How can you find a coterminal angle?

• By multiplying the angle by 2π

• By dividing the angle by 2π

• By adding 90 degrees to the angle

• By adding or subtracting 2π from the angle

Why might one prefer to subtract 6π/3 instead of 2π?

• It is a faster method

• It is a more accurate method

• It makes the angle larger

• It simplifies the angle without involving fractions

What is the result of subtracting a full revolution from an angle?

• The angle remains unchanged

• The angle becomes a reference angle

• The angle becomes negative

• The angle is simplified to a smaller equivalent angle

What is a reference angle?

• An angle that is the smallest angle to the X-axis

• An angle that is measured from the Y-axis

• An angle that is always 180 degrees

• An angle that is always 360 degrees