Answer:
x = 15.49
Step-by-step explanation:
As you can see this is a right-angled triangle due to the right angle symbol, we can use Pythagorean theory to find the unknown length:
In this case, we know C and B but not A so:
Now plug the values in:
Square root the answer to get A:
a = 15.49
x = 15.49
Hope this helps!