Why not all angles have reference angles

The video tutorial explains how to draw an angle, focusing on understanding π halves as half of π in radian form. It discusses the concept of a reference angle in standard form, emphasizing the importance of direction and positive rotation. The tutorial also covers Theta prime, highlighting that it must be an acute angle between the terminal side and the X axis, and clarifies that right angles are not acute.

What does π halves represent in terms of a circle?

• Three-quarters of a circle

• A quarter of a circle

• Half of a circle

• A full circle

In which direction should you rotate to represent a positive angle?

• Downwards

• Upwards

• Counterclockwise

• Clockwise

What is Theta prime?

• The angle between the Y axis and the terminal side

• The acute angle between the terminal side and the X axis

• The obtuse angle

• The full angle

Why can't a right angle be a reference angle?

• Because it is not acute

• Because it is not an angle

• Because it is too large

• Because it is too small

What is the significance of the reference angle?

• It is the largest angle in a triangle

• It is the acute angle used for calculations

• It helps in finding the direction of rotation

• It determines the size of the circle