trigonometry-equations
Trigonometry rules to solve equations for angles and sides
Installation
Run:
npm install trigonometry-equations --save
Usage
- Construct an object mapping angles and sides to their respective objects where the key is a number in the range [0, 3) and the value is the given number.
- Pass the object to an equation function that corresponds with an appropriate mathematical rule.
- The function will return an object similar to the input except it will include a key-value pair containing the solution with full numerical precision.
;// ES5 / CommonJS require works in addition to ES6 import// var equations = require('trigonometry-equations');// In ES5 call equations.sineRule, etclet unsolvedTriangle = angles: 1: 35 2: 105 sides: 1: 7 ;console;/*{ angles: { 1: 35, 2: 105 }, sides: { 1: 7, 2: 11.788282006559363 }}*/ unsolvedTriangle = angles: 2: 59 sides: 0: 36 1: 53 ;console;/*{ angles: { 2: 59 }, sides: { 0: 3.6, 1: 5.3, 2: 4.6255969410912074 }}*/ /*cosineRule has an optional parameterallowing you to specify the angle solvedwhen you pass it three sides.If you don't pass in this parameter it willsolve the first unsolved angle of the triangle.*/unsolvedTriangle = sides: 0: 8 1: 5 2: 9 ;const findAngle = findAngle: 1;console;/*{ angles: { 1: 33.55730976192071 }, sides: { 0: 8, 1: 5, 2: 9 }}*/ unsolvedTriangle = angles: 0: 60 1: 60 sides: 1: 20 ;console;/*{ angles: { 0: 60, 1: 60, 2: 60 }, sides: { 1: 20 }}*/ unsolvedTriangle = angles: 1: 39 sides: 1: 28 2: 41 ;// if there is no solution ambiguousCaseRule will return nullconsole;/*{ambiguous: { angles: { 0: 28.147082985775114, 1: 39, 2: 112.85291701422489 }, sides: { 0: 20.988713127721486, 1: 28, 2: 41 } }}*/
Contributing
A new function or a fixed regression should include matching test coverage. Commits should adhere to cz-conventional-changelog which can be done easily by running git cz or npm run commit.
License
MIT License Copyright (c) 2017 Calvin Mikael