output.to from Sideway
Draft for Information Only

# Content

`Plane Trigonometry Angular Measurement Sources and References`

# Plane Trigonometry

## Angular Measurement

600 The unit of Circular measure is a Radian, and is the angle at the centre of a circle which subtends an arc equal to the radius. Hence 601 Circular measure of an angle=arcradius. 602 Circular measure of two right angles=3.14159⋯≡𝜋. 603 The unit of Centesimal measure is a Grade, and is the one-hundredth part of a right angle. 604 The unit of Sexagesimal measure is a Degree, and is the one-ninetieth part of a right angle. 605 To change degrees into grades, or circular measure, or vice versa, employ one of the three equations included in 𝐷90=𝐺100=2𝑅𝜋 where 𝐷, 𝐺, 𝐶 are respectively the numbers of degrees, grades, and radians in the angle considered.

## Sources and References

https://archive.org/details/synopsis-of-elementary-results-in-pure-and-applied-mathematics-pdfdrive

ID: 210800026 Last Updated: 8/26/2021 Revision: 0 Ref:

References

1. B. Joseph, 1978, University Mathematics: A Textbook for Students of Science &amp; Engineering
2. Ayres, F. JR, Moyer, R.E., 1999, Schaum's Outlines: Trigonometry
3. Hopkings, W., 1833, Elements of Trigonometry

Home 5

Management

HBR 3

Information

Recreation

Culture

Chinese 1097

English 337

Computer

Hardware 156

Software

Application 207

Latex 35

Manim 203

Numeric 19

Programming

Web 285

Unicode 504

HTML 65

CSS 65

SVG 14

ASP.NET 270

OS 422

Python 66

Knowledge

Mathematics

Algebra 84

Trigonometry 31

Geometry 32

Calculus 67

Engineering

Mechanical

Rigid Bodies

Statics 92

Dynamics 37

Control

Natural Sciences

Electric 27