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trigonometry-equations
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Trigonometry rules to solve equations for angles and sides
Run:
npm install trigonometry-equations --save
import {
ambiguousCaseRule,
angleRule,
cosineRule,
sineRule
} from 'trigonometry-equations';
// ES5 / CommonJS require works in addition to ES6 import
// var equations = require('trigonometry-equations');
// In ES5 call equations.sineRule, etc
let unsolvedTriangle = {
angles: { 1: 35, 2: 105 },
sides: { 1: 7 }
};
console.log(sineRule(unsolvedTriangle));
/*
{
angles: { 1: 35, 2: 105 },
sides: { 1: 7, 2: 11.788282006559363 }
}
*/
unsolvedTriangle = {
angles: { 2: 59 },
sides: { 0: 3.6, 1: 5.3 }
};
console.log(cosineRule(unsolvedTriangle));
/*
{
angles: { 2: 59 },
sides: { 0: 3.6, 1: 5.3, 2: 4.6255969410912074 }
}
*/
/*
cosineRule has an optional parameter
allowing you to specify the angle solved
when you pass it three sides.
If you don't pass in this parameter it will
solve the first unsolved angle of the triangle.
*/
unsolvedTriangle = {
sides: { 0: 8, 1: 5, 2: 9 }
};
const findAngle = {
findAngle: 1
};
console.log(cosineRule(unsolvedTriangle, findAngle));
/*
{
angles: { 1: 33.55730976192071 },
sides: { 0: 8, 1: 5, 2: 9 }
}
*/
unsolvedTriangle = {
angles: { 0: 60, 1: 60 },
sides: { 1: 20 }
};
console.log(angleRule(unsolvedTriangle));
/*
{
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 null
console.log(ambiguousCaseRule(unsolvedTriangle));
/*
{
ambiguous: {
angles: { 0: 28.147082985775114, 1: 39, 2: 112.85291701422489 },
sides: { 0: 20.988713127721486, 1: 28, 2: 41 }
}
}
*/
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.
MIT License Copyright (c) 2017 Calvin Mikael
FAQs
Trigonometry rules to solve equations for angles and sides
The npm package trigonometry-equations receives a total of 627 weekly downloads. As such, trigonometry-equations popularity was classified as not popular.
We found that trigonometry-equations demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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