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ee.Number.tan
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计算以弧度表示的输入的正切值。
示例
代码编辑器 (JavaScript)
// Input angle in radians.
print('Tangent of 0', ee.Number(0).tan()); // 0
print('Tangent of π/2', ee.Number(Math.PI/2).tan()); // 16331239353195370
print('Tangent of π', ee.Number(Math.PI).tan()); // 0 (nearly)
// Convert degrees to radians.
var degrees = 45;
var radians = degrees * (Math.PI/180);
print('Tangent of 45 degrees', ee.Number(radians).tan()); // 1 (nearly)
Python 设置
如需了解 Python API 和如何使用 geemap 进行交互式开发，请参阅
Python 环境页面。
import ee
import geemap.core as geemap
Colab (Python)
import math
# Input angle in radians.
print('Tangent of 0:', ee.Number(0).tan().getInfo()) # 0
print('Tangent of π/2:',
ee.Number(math.pi/2).tan().getInfo()) # 16331239353195370
print('Tangent of π:', ee.Number(math.pi).tan().getInfo()) # 0 (nearly)
# Convert degrees to radians.
degrees = 45
radians = degrees * (math.pi/180)
print('Tangent of 45 degrees:',
ee.Number(radians).tan().getInfo()) # 1 (nearly)
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最后更新时间 (UTC)：2025-07-26。
[null,null,["最后更新时间 (UTC)：2025-07-26。"],[[["\u003cp\u003eThis function calculates the tangent of a given input value, which represents an angle in radians.\u003c/p\u003e\n"],["\u003cp\u003eIt returns the computed tangent as a number.\u003c/p\u003e\n"],["\u003cp\u003eThe input value should be provided as an \u003ccode\u003eee.Number\u003c/code\u003e object.\u003c/p\u003e\n"],["\u003cp\u003eExamples demonstrate how to calculate the tangent for various angles, including converting degrees to radians.\u003c/p\u003e\n"]]],[],null,["# ee.Number.tan\n\nComputes the tangent of the input in radians.\n\n\u003cbr /\u003e\n\n| Usage | Returns |\n|----------------|---------|\n| Number.tan`()` | Number |\n\n| Argument | Type | Details |\n|---------------|--------|------------------|\n| this: `input` | Number | The input value. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Input angle in radians.\nprint('Tangent of 0', ee.Number(0).tan()); // 0\nprint('Tangent of π/2', ee.Number(Math.PI/2).tan()); // 16331239353195370\nprint('Tangent of π', ee.Number(Math.PI).tan()); // 0 (nearly)\n\n// Convert degrees to radians.\nvar degrees = 45;\nvar radians = degrees * (Math.PI/180);\nprint('Tangent of 45 degrees', ee.Number(radians).tan()); // 1 (nearly)\n```\nPython setup\n\nSee the [Python Environment](/earth-engine/guides/python_install) page for information on the Python API and using\n`geemap` for interactive development. \n\n```python\nimport ee\nimport geemap.core as geemap\n```\n\n### Colab (Python)\n\n```python\nimport math\n\n# Input angle in radians.\nprint('Tangent of 0:', ee.Number(0).tan().getInfo()) # 0\nprint('Tangent of π/2:',\n ee.Number(math.pi/2).tan().getInfo()) # 16331239353195370\nprint('Tangent of π:', ee.Number(math.pi).tan().getInfo()) # 0 (nearly)\n\n# Convert degrees to radians.\ndegrees = 45\nradians = degrees * (math.pi/180)\nprint('Tangent of 45 degrees:',\n ee.Number(radians).tan().getInfo()) # 1 (nearly)\n```"]]
