There are 4 triangles in the kite, we have the lengths of two sides in the triangle of the top right corner. So we are going to use it. (Triangle WRX)
(Also, it is a right triangle)
Hypotenuse = 25
Leg (base) = 24 ( because ZX = 48, RX = 24)
You want to know the leg (height)
Pythagorean Theorem
x sqr + 24 sqr = 25 sqr
x sqr + 576 = 625
- 576
x sqr = 49
Root sqr
x = 7
Answer: x = 7
It took me a while to do it, sorry!
Have a good day ^^