The opposite side divided by the hypotenuse is called the sine of the angle, and is abbreviated to sin. For a given angle Ɵ, sinƟ = opposite ÷ hypotenuse. This is written as a fraction.

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