Question

Confused about this. Pythagorean Theorem to solve. a^2 + b^2 = c^2. The side represented by the letter c is always the longest side, across from the 90 degree angle. ?

Answer 1

Explanation:

in pythagorean theorem, a and b are always the legs that make the L shape

we know that a is 15 and c is 25

so what we have so far is

15^2 + b^2 = 25^2

now we can solve for b

225 + b^2 = 625

b^2 = 625 -225

b^2 = 400

b = square root(400)

b = 20