44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
import { factory } from '../../utils/factory.js';
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import { createTrigUnit } from './trigUnit.js';
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var name = 'cos';
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var dependencies = ['typed'];
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export var createCos = /* #__PURE__ */factory(name, dependencies, _ref => {
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var {
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typed
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} = _ref;
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var trigUnit = createTrigUnit({
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typed
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});
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/**
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* Calculate the cosine of a value.
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*
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* To avoid confusion with the matrix cosine, this function does not
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* apply to matrices.
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*
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* Syntax:
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*
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* math.cos(x)
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*
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* Examples:
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*
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* math.cos(2) // returns number -0.4161468365471422
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* math.cos(math.pi / 4) // returns number 0.7071067811865475
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* math.cos(math.unit(180, 'deg')) // returns number -1
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* math.cos(math.unit(60, 'deg')) // returns number 0.5
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*
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* const angle = 0.2
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* math.pow(math.sin(angle), 2) + math.pow(math.cos(angle), 2) // returns number ~1
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*
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* See also:
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*
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* cos, tan
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*
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* @param {number | BigNumber | Complex | Unit} x Function input
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* @return {number | BigNumber | Complex} Cosine of x
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*/
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return typed(name, {
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number: Math.cos,
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'Complex | BigNumber': x => x.cos()
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}, trigUnit);
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}); |