Write an expression for a and b

pietro used an eight-foot board to cut 3 shelves. each shelf was 2 1/2 feet long.

a. how much board did the 3 shelves use
b. how much, if any, wood did pietro have left?

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°