Browse Definitions:
Definition

angular degree (deg or °)

The angular degree (symbolized deg or °) is a unit of plane angular measure used in some engineering applications, and by most lay people. There are 360 angular degrees in a complete circle. Thus, one angular degree is equivalent to approximately 0.00277778 of a circle.

Opinions differ concerning the reason why 360 was chosen as the number of angular degrees to comprise a circle. One theory is based on the fact that 360 is approximately the number of days in a calendar year, is a reasonably round number, and can be divided into halves, quarters, and eighths and still obtain whole numbers. A half circle is 180°, 1/4 of a circle is 90°, and 1/8 of a circle is 45°. The Earth moves approximately 1° in its orbit around the sun every 24-hour day.

In mathematics, theoretical sciences, and formal engineering , the radian (rad) is preferred as the unit of plane angular measure. A radian, which is the unit of angular measure in the International System ( SI ), is equivalent to approximately 57.296°.

Also see the Table of Physical Units .

This was last updated in January 2011

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • internal audit (IA)

    An internal audit (IA) is an organizational initiative to monitor and analyze its own business operations in order to determine ...

  • pure risk (absolute risk)

    Pure risk, also called absolute risk, is a category of threat that is beyond human control and has only one possible outcome if ...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • biometrics

    Biometrics is the measurement and statistical analysis of people's unique physical and behavioral characteristics.

  • principle of least privilege (POLP)

    The principle of least privilege (POLP), an important concept in computer security, is the practice of limiting access rights for...

  • identity management (ID management)

    Identity management (ID management) is the organizational process for identifying, authenticating and authorizing individuals or ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

SearchStorage

SearchSolidStateStorage

  • hybrid hard disk drive (HDD)

    A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND Flash memory.

Close