Please help me find (x), the options are in the picture.

Answer:
x=6
Step-by-step explanation:
to find an angle of a right angled triangle we use the pythagorean property
which is
hypotenuse^2 = base^2 + altitude^2
10^2=x^2+8^2
100= x^2 + 64
x^2 +64 = 100
x^2=100-64
x^2=36
x= √36
x=6