Question

A =? , b = 40 ft , C = 50 ft

Answer 1

a = 30

Explanation:

I am not exactly sure what the question is asking but if referring to right triangles, the Pythagorean theorem would work best.

Formula :

`a^2 + b^2 = c^2\\\\`

Substitute values :

`a^2 + 40^2 = 50^2\\a^2 + 1600 = 2500`

Solve for a:

`a = √(2500 - 1600) \\a = 30`

** you could also use the 3:4:5 ratio