Answer:
Step-by-step explanation:
Here, we want to get the value of x
What we have is a right triangle with the hypotenuse being 10 (the hypotenuse is the longest side of a right triangle. It faces the right angle (the small box))
From the Pythagoras' theorem, the square of the hypotenuse equals the sum of the squares of the two other sides
Thus, we have it that: