6.10 摘要:基本三角三角三角三角测量
章节大纲
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When we apply trigonometry, it is important to have a complete toolbox of mathematical techniques to use. Trigonometric functions extend Euclidean geometry to solve problems in many areas, such as surveying and astrophysics.
::当我们应用三角测量时,必须有一个完整的数学技术工具箱来使用。三角测量功能扩展了欧几里德几何学,以解决许多领域的问题,例如测量和天体物理学。Chapter Summary
::章次摘要In this chapter we learned about:
::在本章中,我们了解到:Special Right Triangles
::特别右三角-
A 30-60-90 right triangle has side ratios
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::A 30-60-90右三角有侧翼比率x、x3和2。 -
A 45-45-90 right triangle has side ratios
.
::A 45-45-90右三角形有侧比x、x和x2。 -
Pythagorean triples are special right triangles with integer sides.
::毕达哥林三重三角形是特殊的右三角形,有整边。
Right Triangle Trigonometry
::右三角三角三角三角三角形-
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:: -
::cotadjopp 连接 -
:: -
::csc
Law of Cosines
::科士法-
::a2=b2+c2+c2-2bccosAb2=a2+c2-2acosBc2=a2+b2-2abcosC
Law of Sines
::Sines法律-
::表格1:sinaa=sinBb=sinCform2:asinA=bsinB=csinC
Area Formulas
::区域公式-
::面积=12absinC -
Heron's Formula:
with
::Heron的公式:面积=(s-a)(s-b)(s-c)和s=a+b+c2
Review
::回顾Try the following cumulative review problems to practice the concepts in this chapter:
::尝试下列累积审查问题来实践本章中的概念: -
A 30-60-90 right triangle has side ratios
.