#1**+1 **

Note that the triangle on the left is a 30-60-90 right triangle

The side opposite the 30° angle = 1

The side opposite the right angle is twice this = 2

And the triangle on the rigth is also 30-60-90

The side opposite the 30° angle = the hypotenuse of the first triangle

"x" is oposite the 60° angle and is √3 times as long as the side opposite the 30° angle

So

"x" = 2√3

CPhill May 16, 2020