what is the value of x?

Question

it is an isosceles triangle, standing upright _^ (move the line under triangle and thats the shape of it)
The top angle is 38 degrees, and the two side lines, the legs, are both 21 degrees.
x is the bottom right corner angle, how do i find x

Answer 1

The interior angles of any triangle add up to 180 degrees
2 x + 38 = 180

the legs, are both 21 degrees.
??? huh ????
21 meters maybe
if so then sin (38 / 2) = half the base / 21
so base length = 2* 21 * sin 19