Find missing side of right triangle if the opposite side is 40, and the hypotenuse is 41

To find the missing side of the right triangle, we can use the Pythagorean theorem which states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

Let x be the length of the missing side (adjacent side) of the right triangle.

According to the Pythagorean theorem:

x^2 + 40^2 = 41^2
x^2 + 1600 = 1681
x^2 = 1681 - 1600
x^2 = 81
x = 9

Therefore, the missing side of the right triangle is 9.