Let’s look at how to use trigonometric identities to calculate missing sides. \({sin~θ} = \frac {opposite} {hypotenuse}\) \({cos~θ} = \frac {adjacent} {hypotenuse ...

Most trigonometry students look at triangles on a flat surface. However, people from ancient astronomers to modern navigators calculated the arc lengths and angles of triangles on a sphere. They used ...

There are some trigonometric identities which you must remember in order to simplify trigonometric expressions when required. When you are asked to prove something, ignore the right hand side of ...

They used the Law of Sines in their proof, avoiding circular reasoning, which has long been considered unworkable due to the ...

Place the formula into the cell you want to see the ... Inside the dialog box in the section, Select a Category, select Math and Trigonometry from the list box. In the section Select a Function ...

With two angles and the length of one side of the “triangle”, you can then bung all those numbers into a few trigonometric formulas (the sine rule and Heron’s formula can help) and shazam ...