The pythogrean theorem is a^2+b^2=c^2
"a" and "b" are the legs, and "c" is the hypotenuse.
so 12^2+b^2=13^2
144+b^2=169, subract 144 from both sides.
b^2 = 25, take the square root from both sides.
Hence b=5
Hello!
to find b, let's subtract the squares of the hypotenuse and leg a to find b. We will then find the square root of our answer.
169-144=25
√25=5
Therefore, b=5
I hope this helps!
6.4m questions
8.4m answers