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

sin x^\circ = 0.5\) \(x^\circ = {\sin ^{ - 1 ... solution which is the acute angle from the first quadrant, so to find the second solution, we need to use the rule in the second quadrant.