Question

Looking for the equation to find the length of one side of a rectangle. I have the diagonal and one side of the rectangles numbers. How do I find the other side?

Answer 1

Pythagorean theorem. a^2 + b^2 = c^

so if i have a triangle with a side of 3cm and a diagonal of 5cm I plus the one leg (3) into a^2 and the diagonal (5) into c^2

3^2= 9
5^2= 25

9 + b^2 = 25
b^2= 16

square root 16 which gives you 4