How do you solve a square root equation?

To solve square root equations, isolate the radical on one side of the equation. Then, raise both sides of the equation to the same power.

Source:

www.basic-mathematics.com/how-to-solve-radical-equations.html

Hope this helps!

234°

Step-by-step explanation:

Consider the isosceles triangle formed by the centre and FD

Angle at the centre:

180 - 2(117 - 90)

126

Required angle:

360 - 126

234