# How do you find RAA?

Category:
science
space and astronomy

If the terminal arm is in quadrant 2, do 180∘ minus the principle angle to find the related acute angle. If the terminal arm is in quadrant 3, do the principle angle minus 180∘ to find the related acute angle. If the terminal arm is in quadrant 4, do 360∘ minus the principle angle to find the related acute angle.

Thereof, how do you find the reference angle on a calculator?

**Choose a proper formula for calculating the reference angle:**

- 0° to 90°: reference angle = angle ,
- 90° to 180°: reference angle = 180° - angle ,
- 180° to 270°: reference angle = angle - 180° ,
- 270° to 360°: reference angle = 360° - angle .

**angle**is an

**angle**that measures 90 degrees. An

**acute angle**is any

**angle**smaller than a right

**angle**. An

**example of an acute angle**is a pizza slice.

Thereof, what is a real life example of an acute angle?

Some **real**-**life examples** of **acute angles** are: The arms of a wall clock make **acute angles** at several hours of a day. For **example**, 2 o' Clock. The hour hand and the minute hand forming an **acute angle** at 2 o' Clock.

**Reference Angle**. When an **angle** is drawn on the coordinate plane with a vertex at the origin, the **reference angle** is the **angle** between the terminal side of the **angle** and the x-axis. The **reference angle** is always between 0 and 2π radians (or between 0 and 90 degrees).