Question

. A contractor is cutting wood to brace the side of a

Answer 1

Split into two right angled triangles
label your sides a, b and c
C always has to be the hypotenuse in a right angled triangle
it doesn’t matter which is a/which is b
a^2+b^2=c^2
we know B and C
A^2= C^2-B^2
C=25
B=15
25^2-15^2=20^2
base=20feet