How To Find A Reference Number

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<h3>How To Find A Reference Number</h3>

Finding the reference number in your calculus equation can make the difference between passing your introductory calculus test and class, and having to retake the course. The reference number is identified as the shortest distance along the unit 360 degrees circle between the x-axis and the terminal or ending point of the circle angle. Finding the reference number requires you to understand circle angles and the radians of a circle in terms of pi.

Step 1

Familiarize yourself with circle angles. On a graphed plane with four quadrants, circle angles are split up into numerals with pi symbols. For example, 180 degree = pi while 360 degree = 2 pi.



Step 2

Figure out the terminal point of the equation. The terminal point is the x and y coordinates of your circle angle. Take the angle and check the circle angle wheel to figure out what your terminal point is.

Step 3

Calculate the reference number. The reference number equals pi – the terminal point. For example, if your terminal point = 5 pi / 6, your reference number = pi / 6. Pi would equal 6 pi / 6, and 6 – 5 = 1 or 1 pi / 6. Simplify 1 pi / 6 to pi / 6.

Dave Pennells

By Dave Pennells

Dave Pennells, MS, has contributed his expertise as a career consultant and training specialist across various fields for over 15 years. At City University of Seattle, he offers personal career counseling and conducts workshops focused on practical job search techniques, resume creation, and interview skills. With a Master of Science in Counseling, Pennells specializes in career consulting, conducting career assessments, guiding career transitions, and providing outplacement services. Her professional experience spans multiple sectors, including banking, retail, airlines, non-profit organizations, and the aerospace industry. Additionally, since 2001, he has been actively involved with the Career Development Association of Australia.