Question

Vc 20 ? 13 Find the measure of the missing angle. 50° 410 490

Answer 1

We have to calculate the angle in the picture, so we need to use the trygonometric fuctions:

`\begin{gathered} \cos \theta=\frac{adyacent\text{ side}}{hypothenuse} \\ \cos \theta=(13)/(20) \\ \theta=\cos ^(-1)((13)/(20))=49^(\circ)27^(\prime)30.23^(\doubleprime)\approx49^(\circ) \end{gathered}`

The angle is 49°.