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

The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores ... divided by the hypotenuse is called the sine of the angle, and is abbreviated to ...