Answer:
x = 3 units
Explanation:
This is an isosceles right-angled triangle because one of the three angles is 90° and two of the three sides are equal to eachother:
Slanted height = Hypotenuse
= hyp
=
units
Opposite = opp
= x units
Adjacent = adj
= x units
Pythagorean Theorem will be applied:
=

=

=

=

=


Taking the square root on both sides to get rid of the square:

∴ x = 3 units